Patent ID: 8932171
Filing Date: 2015-01-13
Classification: B66B

Abstract:
1. An apparatus for equalizing tension among elevator wire ropes, the apparatus comprising: a body formed therein with a receiving space; a tension adjustment unit coupled to a plurality of belts connected to the elevator wire ropes, respectively, and installed in the body; a main rotary shaft rotatably coupled to the body by passing through the tension adjustment unit; and first and second external gears, which are fixed to the main rotary shaft such that the first and second external gears are rotatable, and which are coupled to the front and rear surfaces of the tension adjustment unit to transmit rotating forces; wherein the tension adjustment unit comprises: a first pulley around which a first belt of the plurality of belts is wound; a first rotating plate installed in the first pulley and coupled with a plurality of first bevel planet gears; a second pulley around which a second belt of the plurality of belts is wound in an opposition direction to the first belt; a second rotating plate installed in the second pulley and coupled with a plurality of second bevel planet gears; a first engagement gear installed between the first and second rotating plates and engaged with the first and second bevel planet gears; and a third rotating plate and a third pulley located between the second rotating plate and the second external gear, wherein a winding direction of a third belt of the plurality of belts is opposite to the winding direction of the second belt, the third rotating plate is installed inside the third pulley, and a plurality of third bevel planet gears are engaged with the third rotating plate.