Hammer head Assembly


Hammer head Assembly

Heavy duty head assembly fabricated from rolled steel sections is mounted on top of the columns. The drive is through v-belts from high torque A.C. Electric motor via flywheel and reduction gears to the lifter-shaft. Friction lifting system is fitted to lifter shaft which runs on double ball bearings and one central phosphorus bronze bearing which also serves as support to lifter shaft. The friction lifter consists of constantly rotating drum and break lined steel band.
This band is anchored at one end to stud in lifter drum and other end is carried by camshaft running through lifter drum which actuated by lever. The lever is operated with the help of pulling cord tied to lever at one end goes to operating point by passing through capstan bush attached to lifter shaft. When the cord is pulling it tightens on to the rotating capstan bush which operate the lever resulting in tightening of brake around the brake drum with the help of cam shaft.
At this stage lifter drum is rotated and to tup is lifted with the help of nylon belt provided. On release of cord the spring loaded arrangement help free fall of tup by disengaging friction band immediately from the friction drum. The spring loaded buffer work as a stopper for lifting drum is its rest position. Positive water cooling arrangement is provided to the friction drum to prevent excessive heating.

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