US 11,884,514 B2Granted

Safety brake device and safety brake method

AssigneeInventio AG

InventorsHans Blochle, Adrian Steiner, Daniel Meierhans, Julian Stahli

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Abstract

A method and device for safety braking an elevator having an upright guide rail wherein the device includes a housing having braking elements on both sides of and being movable along the guide rail, a safety restraint on both sides between the housing and the braking elements, and a clampable and lockable actuating device that unlocks and unclamps in response to a triggering event and brings the braking elements into braking engagement with the guide rail. The actuating device, when unclamped, develops a feed force and movement transverse to the guide rail longitudinal axis engaging the braking elements with the guide rail from a laterally distanced initial position, wherein the braking elements are entrained by frictional contact on the guide rail and enter the safety restraint, and wherein the actuating device is moved back into the initial position, clamped and locked by the braking elements located in the safety restraint.

Claims17

Dependent claims

A safety brake device for an elevator, the elevator having an upright guide rail upon which the safety brake acts, the safety brake device comprising:

a housing having braking elements arranged on both sides of the guide rail and the braking elements being movable along the guide rail relative to the housing;
a safety restraint on both sides of the guide rail arranged between the housing and the braking elements;
a clampable and lockable actuating device for the braking elements, the actuating device unlocking and unclamping from an actuating device initial position in response to a triggering event and thereby bringing the braking elements into braking engagement with the guide rail;
wherein the actuating device, when unclamped, develops a feed force and a feed movement bringing the braking elements on both sides of the guide rail into engagement with the guide rail from a laterally distanced initial position of the braking elements;
wherein the braking elements, when engaged with the guide rail, are entrained by frictional contact on the guide rail and enter the safety restraint;
and
wherein the actuating device is moved back into the actuating device initial position as the braking elements enter the safety restraint and is clamped and locked in the actuating device initial position by the braking elements located in the safety restraint.

4 more elements

A method for safety braking an elevator, the elevator having an upright guide rail and a safety brake device for engaging the guide rail, the method comprising the steps of:

providing the safety brake device adjacent to the guide rail, the safety brake device having a housing, braking elements in the housing and arranged on both sides of the guide rail, the braking elements being movable along the guide rail relative to the housing, a safety restraint on both sides of the guide rail between the housing and the braking elements, and a clampable and lockable actuating device for the braking elements;
in response to a triggering event, unlocking and unclamping the actuating device from an actuating device initial position thereby bringing the braking elements into braking engagement with the guide rail;
the actuating device, when unclamped, developing a feed force and a feed movement directed transversely to a longitudinal axis of the guide rail, the feed force and the feed movement bringing the braking elements into engagement with the guide rail from a laterally distanced initial position of the braking elements, the engaged braking elements being entrained by frictional contact on the guide rail and entering the safety restraint during movement of the safety braking device parallel to the longitudinal axis of the guide rail;
and
moving the actuating device back into the initial position of the actuating device as the braking elements enter the safety restraint, the actuating device being clamped and locked by the braking elements located in the safety restraint.

2 more elements

Dependencies are inferred from the claim text.