Compact type shallow pit counterweight-free elevator

Abstract

The invention discloses a compact type shallow pit counterweight-free elevator. The compact type shallow pit counterweight-free elevator comprises a hoistway. A lift car is arranged in the hoistway. Acar frame is arranged at the periphery of the lift car. A safety tongs lifting mechanism is arranged on the rear side of the top end of the car frame. A mounting rack which is transversely distributed is arranged at the top end of the hoistway. A traction machine and an overspeed governor are arranged on the mounting rack. Two steel wire ropes are winded around a traction sheave of the traction machine. Both the two steel wire ropes downwards extend to be fixedly connected with the top end of the car frame. The overspeed governor comprises a speed limitation pulley arranged on the mounting rack. A tensioning device is arranged at the position, corresponding to the speed limitation pulley, of the bottom end of the hoistway. The tensioning device comprises a tensioning wheel. An overspeed governor rope is winded between the speed limitation pulley and the tensioning wheel. The overspeed governor rope is further and fixedly connected with the safety tongs lifting mechanism. The compact type shallow pit counterweight-free elevator has the characteristics that the whole occupied space is reduced, the area of the lift car is enlarged, the total cost and energy are reduced, and the application range is broadened.

Description

technical field [0001] The invention relates to a small shaft elevator, in particular to a compact shallow pit elevator without counterweight. Background technique [0002] The shaft of the existing elevator is generally equipped with a counterweight device. The installation of the counterweight device will greatly occupy the space of the shaft, and it will also be installed at the bottom of the shaft, resulting in a small occupied space for the car and a reduction in the number of passengers. The requirement of many people to take the elevator during the peak period of the elevator, the space utilization rate is small, and the cost of the elevator will be increased; and due to the growth of the population, the utilization of housing space is becoming more and more important, and the room structure becomes more compact. In some places where the space is relatively narrow The location can only be set in a small shaft, which requires a large volume of the elevator, and ordinar...

AI Technical Summary

Problems solved by technology

[0002] The shaft of the existing elevator is generally equipped with a counterweight device. The installation of the counterweight device will greatly occupy the space of the shaft, and it will also be installed at the bottom of the shaft, resulting in a small occupied space for the car and a reduction in the number of passengers. The requirement of many people to take the elevator during the peak period of the elevator, the space utilization rate is small, and the cost of the elevator will be increased; and due to the growth of the population, the utilization of housing space is becoming more and more important, and the room structure becomes more compact. In some places where the space is relatively narrow The location can only be set in a small shaft, which requires a large volume of the elevator, and the general elevator cannot be installed in a small shaft, which greatly affects the scope of application of the elevator; and the 2:1 drive mode uses a large energy consumption

Therefore, the existing elevators have the problems of large overall space occupation, small car space, high equipment cost, narrow application range, and high energy consumption.

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