Traction type elevator having cable hitches securing cable...

Details Traction type elevator having cable hitches securing cable... Traction type elevator having cable hitches securing cable...

1999-09-14

2001-05-22

Lillis, Eileen D. (Department: 3652)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific force transmitting connection for...

C187S406000, C187S412000

Reexamination Certificate

active

06234276

ABSTRACT:

CROSS REFERENCE TO RELATED APPLICATION
This application claims benefit of priority to Japanese Patent Application No. JP10-260498 filed Sep. 14, 1998.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an elevator with a cable hitch for securing end parts of the cable which drives a passenger cage.
2. Description of the Background
FIG. 1
shows one example of a conventional two-to-one roping type traction elevator which is constructed such that a cage speed is set to half the cable speed. In
FIG. 1
, a cage sheave
104
is provided at an upper portion of a cage
101
which is hanged by a cable
103
placed around the cage sheave
104
. The cable
103
further around a driving sheave
107
driven by a motor (not shown) and a deflector sheave
108
, and then placed around a counterweight sheave
105
mounted on an upper side of a counterweight
102
.
The opposite ends of the cable
103
are secured on a machine beam (not shown) in a machine room (penthouse)
109
by means of two cable hitches
106
.
However, in one type of two-to-one roping elevator which has a drive unit including the driving sheave
107
, the motor and the like is disposed within an elevator shaft
110
of a building instead of the machine room
109
. Thus, this kind of elevator dispenses with the machine room
109
. As a result, the cable hitches
106
can not be mounted on the machine beam in the machine room
109
in the same way as the elevator shown in FIG.
1
.
SUMMARY OF THE INVENTION
Accordingly, one object of the present invention is to provide a novel traction type elevator having a cable hitch optimally located in an elevator shaft.
This and other objects are achieved according to the present invention by providing a new improved elevator including a cage configured to ascend and descend in an elevator shaft along a cage guide rail, a counterweight configured to ascend and descend in the elevator shaft along a counterweight guide rail, a cable configured to hang and connect the cage and the counterweight, a drive unit configured to drive the cage and the counterweight by providing motive power for the cable, and a cable hitch mounted on one of the cage guide rail and the counterweight guide rail and configured to secure one end of the cable to said one of the cage guide rail and the counterweight guide rail.


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