Magnetic pushing and guiding unloading type elevator

Abstract

The invention provides a magnetic pushing and guiding unloading type elevator, and relates to the technical field of elevators. The magnetic pushing and guiding unloading type elevator comprises a guide rail, an elevator car moving along the guide rail, a traction steel wire rope connected with the elevator car, an elevator main machine used for dragging the traction steel wire rope, a control cabinet controlling the elevator main machine, an energy storage device connected with the control cabinet, a counter weight block connected with the other end of the traction steel wire rope, and a loadbearing stand column. The guide rail and the load bearing stand column are arranged in a shaft, magnetic stress blocks are arranged above and below the counter weight block correspondingly, and a magnetic pushing and guiding device used for pushing the counter weight block to move is arranged on the load bearing stand column, is connected with the energy storage device and comprises a steering gear II arranged on the load bearing stand column, and an electromagnetic converter connected with the steering gear II and used for converting electric energy into magnetic energy. The magnetic pushingand guiding unloading type elevator has the function that braking energy is utilized for assisting elevator starting, the starting energy consumption of the elevator is reduced, energy saving and environment friendliness are achieved, and high efficiency and practicability are achieved.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a magnetic derivation unloading elevator. Background technique [0002] With the development of modern technology, the elevator has become more and more popular as a convenient tool, because it can not only make it easier for the elderly, children, and disabled people to go up and down the stairs, but also help to carry freight. Goods, to people's life lightened a lot of burden. With the continuous development of urban construction, the number of high-rise buildings is increasing rapidly, and multiple elevators will be installed in each building. Due to the high utilization rate of the elevator, its power consumption is also high. And due to the continuous development of science and technology in various fields, the demand for energy is increasing rapidly, but the resources of natural energy are very limited. Therefore, in recent years, energy conservation and secondary util...

AI Technical Summary

Problems solved by technology

[0004] For AC variable frequency elevators, the IGBT (insulated gate bipolar power tube) in the elevator inverter has a withstand voltage limit, so for the energy generated by elevator braking, the following two methods are currently used: one is to use the braking The generated energy is fed back to the capacitor of the inverter’s DC link for storage. At the same time, in order to prevent the capacitor from overvoltage in the inverter, the feedback braking energy is usually dissipated through a high-power resistor. This method will not only cause A large amount of energy is wasted, and a large amount of heat energy will be generated due to resistance dissipation. In order to avoid the negative impact of high temperature on other parts of the elevator machine room, it is necessary to install cooling equipment such as air conditioners, which will further lead to secondary waste of energy; One is to use energy storage and saving technology, that is, to feed it back to the external AC grid through an energy feedback device. However, in this way, on the one hand, when performing real-time feedback, it is difficult to ensure that the fed back energy is consistent with the frequency and phase of the AC grid. The high-frequency part in the components will also have an impact on the stability of the power grid and cause "pollution" to the power grid. In addition, the discontinuity of the elevator braking energy feedback can hardly guarantee the quality of the feedback energy. Finally, this method cannot reduce the generated electricity from Deducting from the power consumption, the user does not get any benefits, and the equipment cost is still very expensive; on the other hand, in order to realize the recovery and utilization of the braking energy of the elevator, traditional energy storage devices such as batteries are usually used for energy storage. The battery itself cannot manage and control energy, so the power density and cycle efficiency are low, and there are problems such as environmental pollution

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