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An elevator apparatus

A technology for elevators and equipment, applied in elevators, transportation and packaging, etc., can solve the problems of maintenance inspection time and cost increase, and achieve the effect of shortening the stopping distance

Inactive Publication Date: 2014-01-22
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when this technology is adopted, it will lead to an increase in maintenance inspection time and cost

Method used

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Embodiment Construction

[0023] In the elevator system according to the present invention, a generator is provided on the guide device that guides the movement of the elevator car and the counterweight on the guide rail. The generator is connected to the guide roller such that the rotation of the guide roller is transmitted to the generator, which generates electricity during emergency braking. The electric power generated by the generator generates resistance to decelerate the elevator car, thereby shortening the stopping distance of the elevator car during emergency braking. By providing the elevator equipment with the above structure, it is possible to shorten the stopping distance of the elevator car at the time of emergency braking with a simple structure (that is, installing a generator on the existing guide device). Therefore, the elevator equipment according to the present invention does not need to increase the mass of the elevator car and the counterweight, does not lead to an increase in co...

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Abstract

The invention provides an elevator apparatus. The elevator apparatus cannot result in increase in cost and may shortens the stop distance of an elevator lift car in emergency braking. The elevator apparatus comprises a guiding device and a guiding roller (17). The guiding device is disposed on the elevator lift car or a counterweight and is moved along a guide rail (3) so as to guide the ascending and the descending of the elevator lift car or the counterweight. The guiding roller (17) is disposed on the guiding device and is rotated on a surface of the guide rail (3). In the elevator apparatus, the guiding device comprises a power generator (20) for generating power by rotating a rotating shaft. The power generator (20) is connected with the guiding roller (17) such that the rotation of the guiding roller (17) is transmitted to the rotating shaft of the power generator when the elevator lift car or the counterweight ascends or descends.

Description

technical field [0001] The invention relates to an elevator installation. Background technique [0002] In a general elevator, the sling is wound on the sheave of the hoist located in the machine room or the hoistway, and the elevator car is raised and lowered by the friction between the sheave and the sling. At this time, if the rope slips between the sheave and the rope during emergency braking such as during a power failure, the stopping distance may increase. In addition, in recent years, an abnormal state in which the elevator runs with the door open has occurred. In order to limit the moving distance of the elevator car in this abnormal state, regulations have been formulated for the door-open driving protection device, so how to shorten the stopping distance during braking has become more important. as important. [0003] In order to shorten the stopping distance during braking, a method of increasing the weight of the elevator car suspended at one end of the sling ...

Claims

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Application Information

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IPC IPC(8): B66B7/02
Inventor 大贯修中岛豪福田治彦
Owner HITACHI LTD
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