DIFFERENTIAL BAND BRAKE Russian patent published in 2010 - IPC F16D49/08 B66D5/10 

FIELD: machine building.

SUBSTANCE: invention relates to machine building field, particularly to brake arrangements. In differential band brake disk is implemented with three crowns, central and adjoining to it two external crowns. Two external crowns are enveloped by additional brake bands, ends of which are directed to the side opposite to ends of the first brake band, are located symmetric to it relative to axis of brake shaft and are fixed on additional brake lever similarly to brake band, enveloping central crown. Both brake levers, located below and from the top of brake pulley, are located in initial position parallel to each other and symmetrically relative to axis of brake shaft of brake and are interlocked to each other by jointed torque link. Central pivot of torque link is located in plane passing through axis of brake shaft, and is fixed on slider with ability of its displacement in mentioned plane relative to fixed on frame guides. Links of jointed torque link allows similar length and are located relative to each other at a sharp angle, symmetrically oriented relative to mentioned plane. Slider by means of rod is interlocked with drive of connection and disconnection of brake. Link of jointed torque link is connected to additional brake lever and is implemented as double.

EFFECT: there is achieved increasing of realised braking torque and excluding of bending loads on brake shaft and decreasing of its diametre, and also increasing of reliability of work of interlocked with mechanism brake ensured by usage of three brake bands instead of one.

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