Blower reverse braking device in heating furnace

摘要

More particularly, the present invention relates to a braking apparatus for a braking apparatus which is provided with a ratchet (3-2) coupled to an extension shaft (1) extending from a drive shaft (31-1) of a blower )and; A rotary drum 3-1 integrally formed on a rear side of the ratchet 3-2 and having a brake pad 5 attached to a rear side inclined inner circumferential surface thereof; A brake pad 4 attached to the outer peripheral surface of the front side of the rotary shaft 3 is tightly fitted to the brake drum 5 of the rotary drum 3-1 while being coupled to the extension shaft 1 so as to be axially movable, A brake drum 6 to which a guide pin 7 is fixed on an outer peripheral surface; The lever ring 8 assembled by the bolts 26 and 10 is engaged with the outer peripheral surface on the rear side of the brake drum 6 so that the guide hole 8-1 is fitted in the guide pin 7, A first brake portion 25 coupled to the upper portion of the base 16 such that the lower end of the lever ring 8 is rotated about the center pin 11 by the cylinder 13; The piston 29 and the rod shaft 9 which are resiliently moved by the magnetic force of the electromagnet 21 are embedded in the cylinder 29 attached to one side of the fixed base 22, The lower end of the brake lever 17 is coupled to the top end of the rod shaft 9 by the engaging pin 19 and the upper end of the brake lever 17 is engaged with the ratchet 3-And a second brake portion (24) attached to and detached from the tooth groove of the second boss (2).