TENSIONER WITH SPRING TENSION FOR SPEED LIMITER ROPE Russian patent published in 2020 - IPC B66B5/04 

FIELD: machine building.

SUBSTANCE: tension device (1) for elevator speed limiter rope has spring tension mechanism for tensioning guide roller (8) of speed limiter cable. Spring tensioning mechanism consists of at least two guide posts (2), on each of which is strung along spring element (14) and which are retained by main frame (3a, 3b,) in such a way that their first section (2a) of the rack guide is completely contained within the region limited by main frame (3a, 3b), and their second section (2b) of the rack guide above main frame (3a, 3b) is located outside this limited area, and from carriage (4a, 4b, 5, 6) with guide roller (8) fixed on it with possibility of rotation, which by means of two crossbars (5, 6) is installed with possibility of movement on two guide posts (2). Carriage lower crossbar (5) moves along first sections (2a) of guide posts and forms a counter support for spring elements (14), which rest on upper side horizontal section (3a) of main frame (3a, 3b) on its other side. Upper crossbar (6) of carriage (4a, 4b, 5, 6) moves along second section (2b) of the guide posts and mainly rests against the movable spring stroke limiter.

EFFECT: invention enables precise and rigid control of the guide roller and makes it possible to make the device particularly narrow, so that for a given cross section of the shaft, the area of the elevator cabin base can be made as large as possible.

14 cl, 12 dwg