Design and construction of a tractor PTO driven hammer and spreader for organic manure.

Abstract

The organic manure hammer and spreader was designed and constructed from locally available materials for crushing the cow dung into small size particle enough to pass through the holes of the detachable concave sieve positioned beneath the hammer assembly. The crushing process is achieved by the use of swinging hammers in beating the material fed into fine particles. Based on the power ratings and output shaft speed of the existing grinding machines in industries; it was found that the rotor shaft speed of 1500rpm is suitable to crush the cow dung, a speed of around 50rpm is required to move the conveyor in respect to the ground wheels and the friction imposed by the ground.