US 2025/0100848 A1 · ARRANGEMENT AND A METHOD FOR AUDITING CAR GUIDE RAIL STRAIGHTNESS

Abstract

The invention relates to an arrangement for auditing straightness of a car guide rail, the arrangement comprising: a car guide rail mounted in an elevator shaft; an elevator car connected to the car guide rail via a guide member, said guide member, in a straightness auditing mode being adapted so that the horizontal distance between the elevator car and the car guide rail to be audited is constant; a plumb line stabilized in the elevator shaft adjacent to the car guide rail; an indicator detachably attached to the elevator car, in vicinity of the plumb line; at least one visual recording device detachably attached to the elevator car, facing the plumb line and the indicator, for recording a displacement of the indicator relative to the plumb line; and a memory for storing recorded relative displacement. The invention also relates to a method for auditing straightness of a car guide rail.

Claims15

Dependent claims

An arrangement for auditing straightness of a car guide rail the arrangement comprising:

a car guide rail mounted in an elevator shaft,
an elevator car connected to the car guide rail via a guide member, said guide member, in a straightness auditing mode being adapted so that the horizontal distance between the elevator car and the car guide rail to be audited is constant,
a plumb line stabilized in the elevator shaft adjacent to the car guide rail,
an indicator detachably attached to the elevator car, in vicinity of the plumb line,
at least one visual recording device, wherein the visual recording device is a camera or a device comprising a camera, detachably attached to the elevator car, facing the plumb line and the indicator, for recording a displacement of the indicator relative to the plumb line,
a memory for storing recorded relative displacement, and
wherein the recording is a continuous recording, or pictures taken at predetermined times.

4 more elements

A method for auditing straightness of a car guide rail, the method comprising preparation steps:

(A) providing a car guide rail mounted in an elevator shaft,
(B) providing an elevator car connected to the car guide rail via a guide member, and adapting said guide member so that the horizontal distance between the car and the audited car guide rail is constant during auditing steps,
(C) stabilizing a plumb line in the elevator shaft adjacent to the car guide rail,
(D) detachably attaching an indicator to the elevator car, in vicinity of the plumb line,
(E) detachably attaching at least one visual recording device, wherein the visual recording device is a camera or a device comprising a camera, to the elevator car, facing the plumb line and the indicator,
and the method comprising auditing steps:
(F) recording the plumb line and the indicator with the visual recording device or respectively devices as a continuous recording or as pictures taken at predetermined times,
(G) moving the elevator car in the shaft,
(H) storing the recording on a memory, and
(I) analysing the recording to audit the straightness of the car guide rail.

7 more elements

Dependencies are inferred from the claim text.

Arrangement and a method for auditing car guide rail straightness

Life of this patent

Arrangement and a method for auditing car guide rail straightness

Life of this patent

Abstract

Claims15