Elevator without mechanical room

Abstract

A mechanical room-free elevator is provided. At least an elevator car (1), a balance weight (2), a sling (6), a drive sheave (4), and a motor (3) for driving the drive sheave (4) are provided inside the lift passage. and a diverting pulley (5), wherein a plurality of motors (3A, 3B) for driving the drive sheave (4) are arranged on both sides of the drive sheave (4), and the drive sheave (4) and The diverting pulley (5) adopts a 1-to-1 winding method, and one end of the sling (6) is wound on the elevator car (1), and the other end is wound on the balance weight (2) on. In this way, the elevator without a mechanical room can not only save the space at the top of the elevator car in the height direction of the hoistway, but also achieve high speed at the same time.

Description

technical field [0001] The invention relates to a machine-room-less elevator in which a driving device is arranged in an elevator passage. Background technique [0002] As a conventional elevator without a machine room, a traction sheave type elevator has been disclosed, such as the invention disclosed in Japanese Patent Laid-Open No. Hei 7-10434 of Patent Document 1, which is characterized in that the machine room is eliminated to reduce the occupied space. Space. In addition, for example, the invention disclosed in Japanese Patent Application Laid-Open No. 2002-80178 of Patent Document 2 uses a thin motor with a small axial dimension to reduce the planar area of ​​the lift passage. Furthermore, for example, the invention disclosed in Japanese Patent Application Laid-Open No. 2004-142853 of Patent Document 3 suspends the elevator car in a 1-to-1 winding manner and suspends the balance counterweight in a 2-to-1 winding manner. , thus setting the lifting stroke of the balan...

AI Technical Summary

Problems solved by technology

[0006] However, in the structure of Patent Document 1, since the 2-to-1 winding method is adopted, although there is no problem in the low-speed region, in the high-speed region, noise and vibration are likely to occur in the elevator car, so it is difficult to achieve high-speed

In the structure of Patent Document 2, since a thin motor with a small axial dimension is used, the planar area of ​​the lifting passage can be effectively reduced, but since the radial width of the thin motor increases, it is difficult to save space in the height direction

In addition, in the structure of Patent Document 2, although a 1-to-1 winding structure is adopted, the structure in which the sling is wound around the driving sheave (about 360 degrees) is adopted. If multiple slings need to be erected, With the above structure, the rope will be twisted and the life of the rope will be shortened, and special measures different from the usual shape are required to ensure the adhesion to the sheave, etc.

Furthermore, in the structure of Patent Document 3, although the driving sheave and the diverting pulley are set on the upper part of the lifting passage at the same height, and a fully wound (full-enclosed) structure is adopted, but because the balance weight side adopts The 2-to-1 winding structure increases the length of the sling and tends to sway due to mechanical resonance, making it difficult to achieve high speed

Moreover, in the structure of Patent Document 3, since the sheave is arranged at the corner of the lifting passage and driven by a single motor, it is difficult to realize effective use of space and high speed at the same time.

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