Elevators by Mitsubishi – Borne of Precision and Innovation

Mitsubishi Electric has played an important role in developing and creating some of the most high-tech products that the world sees today. And in the 1930s when the company entered the elevator business, it introduced some of the biggest breakthroughs in the history of lift and elevator technology. It opened the way for new-age elevators that can go up to speeds as high as 1,000 metres per minute and more. Today, the organization is known to the world as a leader and standard-bearer of elevator quality and innovation.

Working Systems of an Elevator

Driving System

1. Traction method: This system has two types of driving systems – drum method for a winding-drum type and traction method for a traction type. The traction method can be further divided into geared and gearless. In the geared traction method, the motor rotation i.e. the speed is reduced by a speed reducer that is equipped with helical gears. This reduced speed is then transmitted to the traction sheave of the machine. When the gearless one is spoken of, here the traction sheave of the machine is directly connected to the shaft of the traction motor. The motor rotation i.e. speed is transmitted to the sheave without any intermediate gearing.

2. Hydraulic type: Here, the hydraulic power unit forces the oil into the hydraulic jack which is a combination of plunger and cylinder. After which, the plunger pushes the lift car upwards using the oil which is under a specific pressure value. Once the oil returns to the cylinder, the car automatically descends.

Roping System

Though the roping system varies according to the traction speed, rated load, and other such factors, it is always ensured that the roping is kept as simple as possible. If the number of deflectors and suspension sheaves are reduced, the longevity and efficiency of the rope improve.

Control System

With modernisation in the technology of elevators, even their control system techniques have also upgraded. With the current rope-type elevators, the VVVF Inverter Drive control systems are used – known for their ease of control and energy-efficient features.

In this, AC power is first converted into DC power through a converter which is further converted into 3-phase AC. Here, the voltage and frequency are varied to control the electric motor rotation. If the motor rotation speed and torque are controlled, this control system delivers a smooth operation of the lift and elevator.

Special Features

Elevators by Mitsubishi Electric are packed with upgraded and sophisticated features that make elevator operation more comfortable, safe, and up to date. These functions are categorically divided into door safety function, a security function, energy-saving functions, and service functions. Apart from that, the elevators are also uniquely designed with features like a large indicator, voice guiding system, sonic car buttons, and many such features.

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Created on Oct 24th 2019 05:29. Viewed 518 times.

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