US 6,471,012 B2 · Pulley system for a traction sheave elevator

Abstract

The invention relates to a traction sheave elevator. The elevator car has been arranged to move along guide track in an elevator shaft. The counterweight has been arranged to move along guide track in the elevator shaft. Both ends of rope are attached to a fixed overhead structure. The elevator car and the counterweight are supported by the rope. The rope is passed via a number of rope pulleys, one of which is the traction sheave while the others are diverting pulleys. Rope pulleys are connected to the counterweight, to the fixed overhead structure in the upper part of the elevator shaft and to the elevator car. The elevator car is provided with a first pair of car rope pulleys placed at a distance from each other. The traction motor has been arranged to drive one of the rope pulleys, which is the traction sheave. Connected to the elevator car is a second pair of car rope pulleys, in which the car rope pulleys are at a distance from each other. An auxiliary rope pulley is connected to the fixed overhead structure. The rope is passed from a car rope pulley of the first pair of car rope pulleys via the auxiliary rope pulley mounted on the fixed overhead structure to a car rope pulley, of the second pair of car rope pulleys.

Claims10

Dependent claims

A traction sheave elevator, comprising:

an elevator car adapted to move along a first guide track in an elevator shaft;
a counterweight adapted to move along a second guide track in the elevator shaft;
a rope, having first and second ends, wherein both ends are attached to a fixed overhead structure in upper part of the elevator shaft, the elevator car and the counterweight being carried by said rope;
a plurality of rope pulleys adapted to receive the rope and connected to the counterweight, a fixed overhead structure in the elevator shaft, and the elevator car, wherein the plurality of rope pulleys comprises:
a traction sheave;
a first pair of car rope pulleys mounted on the elevator car at a first distance from each other;
a second pair of car rope pulleys mounted on the elevator car at a second distance from each other;
and
an auxiliary rope pulley connected to the fixed overhead structure, wherein a rope is passed from one of the car rope pulleys of the first pair of car rope pulleys to one of the car rope pulleys of the second pair of car rope pulleys by way of the auxiliary rope pulley;
and
a traction motor arranged to drive the traction sheave.

8 more elements

A traction sheave elevator, comprising:

an elevator car adapted to move along a first guide track in an elevator shaft;
a counterweight, adapted to move along a second guide track in the elevator shaft;
a rope, having first and second ends, wherein both ends are attached to a fixed overhead structure in upper part of the elevator shaft, the elevator car and the counterweight being carried by said rope;
a plurality of rope pulleys adapted to receive the rope and connected to the counterweight, a fixed overhead structure in the elevator shaft, and the elevator car, wherein the plurality of rope pulleys comprises:
a traction sheave,
a first pair of car rope pulleys mounted on the elevator car at a first distance from each other,
a second pair of car rope pulleys mounted on the elevator car at a second distance from each other, and
an auxiliary rope pulley connected to the fixed overhead structure, wherein a rope is passed from one of the car rope pulleys of the first pair of car rope pulleys to one of the car rope pulleys of the second pair of car rope pulleys by way of the auxiliary rope pulley;
and a traction motor arranged to drive the traction sheave;
a first counterweight rope pulley and a second counterweight rope pulley, both connected to the counterweight;
and
a second auxiliary rope pulley mounted on the fixed overhead structure directly above the counterweight wherein the rope passed from the first counterweight rope pulley to the second counterweight rope pulley via the second auxiliary rope pulley.

9 more elements

Dependencies are inferred from the claim text.

Pulley system for a traction sheave elevator

Life of this patent

Pulley system for a traction sheave elevator

Life of this patent

Abstract

Claims10