| 摘要(英) |
It is well-known that “the most energy saving way for an elevator operation is to adjust the weight of counterweight box to balance the weight of the carriage”. This thesis uses the knowledge to design an energy saving elevator in which the weight of the counterweight box can be adjusted by a weight adjusting system to balance the weight of elevator carriage at any time. Experiment result shows that the power consumption is at most reduced to 50%. In traditional elevators, there is a fixed weight counterweight box, which is generally as one and a half times of the weight of the empty elevator carriage, for the operation of elevator. If the people number in the carriage is changed, the counterweight box with fixed weight cannot balance with the weight of carriage with people, the elevator will consume more power to operate. Therefore, in this thesis, we propose a novel method to improve the structure of the traditional elevator in which the counterweight weight can be adjusted to balance the weight of the carriage such that the power consumption is reduced.
There are three water tanks set at the top, middle floor and bottom floor, respectively, of a building. When the carriage is still and empty, its weight equals to the weight of the empty counterweight box. Then the energy consumption is most saving. While if there are some people entering or leaving the elevator carriage, the weight of the carriage is changed. Then according to the weight and position of the counterweight box, the weight adjusting system can assign suitable water tank to pour water into or draw water off the counterweight box such that the weights of both sides are equal. Therefore, the power consumption of the elevator operation will be reduced obviously. |
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