The invention relates to a roller brake of a crane hoisting mechanism. The roller brake comprises a bracket, wherein a roller is arranged at the middle part of the bracket; the outer side of the roller is encircled with two sets of brake shoes; the upper ends of the two sets of brake shoes are both connected with baffle plates; the outer sides of the baffle plates are connected with brake grooves; screw rods are inserted in the middle parts of the brake grooves; the top ends of the screw rods are connected with screw caps; the screw rods are provided with threads in a winding manner; sleeves are arranged in the connecting places of the outer sides of the brake grooves and the screw rods; springs are arranged between the baffle plates and the inner side walls of the brake grooves; the screw rods penetrates through the internals of the springs; a cam is arranged between the two baffle plates; the right end of the cam is connected with a cross bar; the right end of the cross bar is connected with a transmission rod through a rotating shaft; the right side of the transmission rod is connected with a push rod through a rotating handle; a ratchet wheel is fixedly connected with an adjusting rod A convenient for the rotation of the ratchet wheel; and a pawl base is arranged at the outer side of an eccentric shaft, and is hinged with a pawl. The roller brake has the advantages of simple design, convenience for operation, good economy, convenience for assembly and disassembly and stable braking.
Roller brake of crane hoisting mechanism
24.02.2016
Patent
Elektronische Ressource
Englisch
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