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Patent Searching and Data


Title:
ELEVATOR DEVICE
Document Type and Number:
Japanese Patent JPS6481791
Kind Code:
A
Abstract:

PURPOSE: To decrease the capacity of a drive motor by winding a car-hanging first main rope and a balance-weight-hanging second main rope in opposite directions, with one end of each secured to a drum.

CONSTITUTION: A first main rope 2 is connected at one end to a cage 1 and secured at the other end to a first drum 3A axially supported within a machine room, so that the main rope 2 is wound on the first drum 3A. A second main rope 3 is connected at one end to a balance weight 7 and secured at the other end to a second drum 3B which is coaxial with respect to the drum 3A, so that the second main rope 3 is wound in the opposite direction to the first main rope 2. The first and second drums are driven by a drive motor 6 and therefore the car 1 and the balance weight 7 rise and fall in the opposite directions. The weight of the balance weight 7 is equal to that of the cage 1 plus about half the live load thereof. Therefore, the load of the drive motor 6 can be minimized.


Inventors:
SUGAWARA JIYUN
YAMAMOTO TAKEKI
Application Number:
JP23874087A
Publication Date:
March 28, 1989
Filing Date:
September 25, 1987
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
B66B11/06; B66B11/00; (IPC1-7): B66B11/00; B66B11/06
Attorney, Agent or Firm:
Katsuo Ogawa (2 outside)