ELEVATOR DEVICE - MITSUBISHI ELECTRIC CORP

Title:

ELEVATOR DEVICE

Document Type and Number:

WIPO Patent Application WO/2007/138707

Kind Code:

A1

Abstract:

A drive device having a drive sheave rotated about a rotation shaft placed in the vertical direction is provided at the upper part of a hoistway. First and second main ropes suspend a common elevator car and also suspend a common counterbalance weight. At the upper part of the hoistway are provided a first car-side deflection sheave for leading the first main rope to the car, a second car-side deflection sheave for leading the second main rope to the car, a first counterbalance weight-side deflection sheave for leading the first main rope to the counterbalance weight, and a second counterbalance weight-side deflection sheave for leading the second main rope to the counterbalance weight. Also provided at the upper part of the hoistway is a horizontal turnabout shave for changing the direction of the first main rope. That portion of the first main rope which is between the drive sheave and the first counterbalance weight- side deflection sheave is passed over the horizontal turnabout sheave. The first and second main ropes are individually passed over the drive sheave such that at least portion of force that the rotation shaft of the drive sheave receives from the first main rope and portion of force that the rotation shaft of the drive sheave receives from the second main rope are cancelled against each other.

Inventors:

MARUYAMA NAOYUKI (JP)
ANDO EIJI (JP)

Application Number:

PCT/JP2006/310991

Publication Date:

December 06, 2007

Filing Date:

June 01, 2006

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MITSUBISHI ELECTRIC CORP (JP)
MARUYAMA NAOYUKI (JP)
ANDO EIJI (JP)

International Classes:

B66B11/08; B66B7/00; B66B7/06

Domestic Patent References:

WO2006033146A1	2006-03-30
WO2006040813A1	2006-04-20

Foreign References:

JP2001048450A

2001-02-20

Other References: