Elevator energy saving device based on dynamic equilibrium

Abstract

The invention belongs to the technical field of elevator energy saving devices, and particularly relates to an elevator energy saving device based on dynamic equilibrium. The elevator energy saving device comprises a motor, a brake, a speed reducer and a guiding wheel which are sequentially connected; a hoisting rope is arranged on the speed reducer and the guiding wheel, a rope socket and an elevator car are connected to one end of the hoisting rope, a balance weight is connected to the other opposite end, an adjustable stepless speed changing device is arranged between the hoisting rope and the balance weight, and the balance weight acts on the guiding wheel through the adjustable stepless speed changing device; a loading sensor is arranged in the elevator car and used for reading the weight of the elevator car and passengers and adjusting the appropriate speed changing ratio in real time according to the weight size of the elevator car, and then the weight of the two sides of the guiding wheel is equal. According to the elevator energy saving device based on dynamic equilibrium, the equivalent loads of steel wires on the two sides of the guiding wheel can approach an equilibrium state on the condition of different loads of an elevator through a dynamic adjusting method, and the purposes of reducing energy consumption of the elevator, saving energy, reducing emission and protecting the environment are achieved.

Description

technical field [0001] The invention relates to the field of elevator energy-saving devices, in particular to an elevator energy-saving device based on dynamic balance. Background technique [0002] With the progress of urbanization in our country, the total energy consumption of buildings is increasing year by year, and its proportion in the total energy consumption has risen from 10% in the late 1970s to 27.45%. The energy consumption of buildings generally accounts for about 33% of the total energy consumption in the country. It can be inferred that with the acceleration of urbanization and the improvement of people's quality of life, the proportion of my country's building energy consumption will eventually rise to about 35%. With such a large proportion, building energy consumption has become the weakness of my country's economic development. [0003] In civil residential buildings, the energy consumption of elevators accounts for about 5% of the total building energy...

AI Technical Summary

Problems solved by technology

Due to the large gap between T2 and T1, not only the potential energy stored in the counterweight is completely wasted, but also the motor needs to do extra work

[0007] At present, the elevators on the market belong to the static balance system. The load of the car will change due to the number of passengers, while the weight of the counterweight will always remain unchanged and directly act on the motor, which will cause the gravity of the counterweight and the car to be unbalanced. The traction system needs to overcome the gravity to consume electric energy during the full-load uplink process, and the potential energy stored in the counterweight is wasted and lost during the no-load uplink process.

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