Braking apparatus for an elevator system

Abstract

Braking apparatus (1) for an elevator system for generating friction locking on a guide rail (2) of the elevator system, wherein the braking apparatus comprises the following: a brake caliper (3) comprising two limbs (3e) which are mounted pivotably, wherein one end of each limb (3e) is connected to a brake lining carrier (3b), and wherein the opposite end of each limb (3e) is connected in articulated fashion to a toggle lever (6), wherein the toggle lever (6) comprises a first lever (6a) and a second lever (6b), which are connected in articulated fashion to one another via a toggle lever joint (6c), wherein the first and second levers (6a, 6b) are connected in articulated fashion to in each case one of the limbs (3e), wherein a linear drive (7) is arranged running between the two limbs (3e) and along the two limbs (3e), and wherein the linear drive (7) is connected to the toggle lever joint (6c) via a connecting part (8) in order to actuate the brake caliper (3), wherein the connecting part (8) comprises a pretensioned spring (10), and wherein the connecting part (8) is configured in such a way that the connecting part (8) is extended under tension when a pretensioning force (Vk) preset by the pretensioned spring (10) is exceeded, and wherein the linear drive (7) is mounted pivotably about a pivot axis (7f), wherein the pivot axis (7f) and the axis of rotation (6d) of the toggle lever joint (6c) run substantially parallel.

Description

technical field [0001] The invention relates to a braking device for an elevator installation according to the preamble of claim 1 . Background technique [0002] A large number of elevator installations are known which have guide rails on which the passenger car is supported in a vertically movable manner. Furthermore, it is known to fasten braking devices to the passenger car, which serve to dampen vibrations or vertical sway during parking of the passenger car and to hold the passenger car when stepping on and leaving the passenger car. vertical position of the compartment. In order to achieve the above functions, the passenger car is fixed and held by the brake device through the frictional lock on the guide rail of the elevator equipment during the stop on the floor, wherein, when the passenger car continues to run, the brake device A corresponding control command is issued to release the frictional lock, so that the passenger car can continue to travel. It is known,...

AI Technical Summary

Problems solved by technology

[0003] This braking device has the disadvantage that it is relatively large and heavy and is therefore only suitable for retrofitting on relatively large passenger cars

Furthermore, the known braking devices are relatively expensive

Furthermore, problems arise if the brake linings are partially worn and / or if the brake linings are not arranged symmetrically with respect to the guide rail when the brake is held firmly and released

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