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Elevator equipment

A technology for elevators and equipment, applied in elevators, transportation and packaging, etc., can solve problems such as the decline of elevator service quality

Inactive Publication Date: 2010-11-03
HITACHI LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In the above method, the method of stopping within the time required for the earthquake to calm down, or the method of restoring the sensor by the maintenance personnel, when the earthquake occurred is a small or medium earthquake that will not damage the elevator, it will cause the elevator to stop unnecessarily. It is in a dormant state for a long time, which will lead to a decline in the service quality of the elevator

Method used

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Embodiment Construction

[0018] Embodiments of the present invention will be described below with reference to the drawings.

[0019] figure 1 It is a diagram showing a configuration example of an elevator system according to an embodiment of the present invention. The elevator system of this embodiment is configured such that the elevator car 1, the counterweight 2, and the like move up and down along guide rails (not shown). Wherein, the elevator car 1 and the counterweight 2 are suspended into a bucket-like shape by the main sling 7, and are driven by the winch 4 arranged in the machinery room 21 on the upper part of the hoistway 20. A control panel 3 , a governor 6 , and a vibration sensor 5 are installed in the machine room 21 , and a governor rope 8 is wound around the governor 6 . In addition, when viewed from the hoisting machine side, a balance rope 9 for compensating for a weight difference between the main rope 7 on the side of the elevator car 1 and the side of the counterweight 2 is al...

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Abstract

The invention provides an elevator device. The inside of an elevation channel (20) or of a building is provided with a vibration sensor (5) which is used for detecting the acceleration or the speed. The elevator device also has a judging device which controls the beginning of the operation when a detection value of the vibration sensor (5) or a value obtained from a calculation regulated by the use of the detection value exceeds a threshold value. The surplus time exceeding the threshold value is taken as the time point for initial calculation, and the normal operation is restored after a certain period of time. However, if the threshold value is exceeded again within the certain period of time, the time point for initial calculation is updated, with the new surplus time exceeding the threshold value taken as the time point for a new initial calculation. The normal operation is restored after a certain period of time. Hereby, after the entrance of the elevator into a controlled operation according to the detection signal from the building shaking sensor during an earthquake or a strong wind, etc., the elevator is kept safe and can return to the normal operation quickly.

Description

technical field [0001] The present invention relates to an elevator system that performs controlled operation when a building shakes due to an earthquake or strong wind. Background technique [0002] When an earthquake occurs, the P wave (longitudinal wave) with a faster propagation speed and the S wave (transverse wave) with a slower propagation speed but showing the main motion of the earthquake propagate from the source to the building respectively. As a prior art, for example, the following Non-Patent Document 1 discloses a scheme that classifies the acceleration levels of the S waves in the horizontal direction detected by the building shaking detection device into extremely low levels, low levels, and high levels. The constituted threshold level is used to control the operation of elevators during earthquakes. Before the shaking of the building due to the main motion of the S wave becomes large, the arrival of an earthquake can be detected several seconds earlier than...

Claims

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Application Information

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IPC IPC(8): B66B5/02
Inventor 中山彻也重田政之宫田弘市中村秀广木田秀一
Owner HITACHI LTD
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