Elevator apparatus with compensating means so that the first roller is largely unloaded when the elevator car is stationary

Abstract

The invention relates to an elevator installation (1) having an elevator car (5) movable along a guide rail (3). The elevator arrangement here comprises at least a first pair of rollers ( 29 ) and a second pair of rollers ( 31 ). The guide rail (3) extends between the two rollers (45, 46) of the first roller pair (29) and between the two rollers (47, 48) of the second roller pair (31). The elevator installation (1) also has means (19) for subjecting the elevator car (5) to a holding force (21), wherein there is a horizontal offset between the point at which the holding force acts and the center of gravity of the elevator car , and thus subject the elevator car to a first moment. In addition, the elevator car has at least a first compensating device (63), so that when the elevator car (5) is at rest, the guide rail (3) is subjected to sufficient force to generate a second moment, which is largely The first moment is compensated such that the first roller (45) of the first roller pair (29) is largely unloaded when the elevator car (5) is at rest.

Description

technical field [0001] The invention relates to an elevator installation with eccentric means for holding an elevator car. Such lift installations are known, for example, from EP1772413 and EP1818305. With the eccentric means for holding the elevator car, the holding force is not applied centrally to the elevator car. This means that the holding force is neither along the line of the center of gravity (including the vertical line of the center of gravity) nor at the geometric center position or along the corresponding vertical line. Background technique [0002] In this case the elevator installation comprises an elevator car movable along the guide rail, the elevator car having at least a first roller pair and a second roller pair. In this case, the guide rail extends over the two rollers of the first roller pair and between the two rollers of the second roller pair. In addition, the elevator installation has means for subjecting the elevator car to holding forces. In t...

AI Technical Summary

Problems solved by technology

But at high speeds, the stiffer roll material produces noticeable noise

Additionally, the weak cushioning of the stiffer roll material creates an uncomfortable ride because relatively much vibration is transmitted to the elevator car

However, softer roller materials with better cushioning are subject to greater plastic deformation, which in turn leads to loud noise generation and an uncomfortable ride experience

Therefore, rolls with soft roll material may only be suitable for low payloads, or such rolls need to be replaced frequently

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