Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DRIVE SHEAVE AND ELEVATOR
Document Type and Number:
Japanese Patent JP2011153003
Kind Code:
A
Abstract:

To suppress abrasion of a main rope and reduction of a traction performance of an elevator.

The main rope 40 of the elevator hangs a car and a counterweight and is wound around a drive sheave 10. A sheave groove 12 having a groove inner surface covered by a lining material 30 is formed on the drive sheave 10 in a circumferential direction. The sheave groove 12 has a cross section having a circular arc shape. Two relief grooves 20 extending over a whole circumference in the circumferential direction is formed at a position away from the deepest portion 14 of the sheave groove 12. The two relief grooves 20 are positioned on both sides of the deepest portion 14 to sandwich the deepest portion 14.


Inventors:
SHIMIZU MAI
TANAKA KAZUHIRO
Application Number:
JP2010016727A
Publication Date:
August 11, 2011
Filing Date:
January 28, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOSHIBA ELEVATOR CO LTD
International Classes:
B66B7/06
Attorney, Agent or Firm:
Osamu Kikuchi