Rotor is hammer crusher’s main working
parts, and the rotor is formed by the spindle and hammer holder. The hammer pin
on the hammer holder divides the hammerhead into three rows hanging between the
hammer frames. In order to prevent the axial and the hammerhead traversing, the
two ends of the frame are fixed with the compaction hammer plate and the
locking nut. The rotor is supported by the two rolling bearings fixed to the
lower rack with the abutment of the bolt. Except the bolt outside, there are
two locating pin fixed to the center of the bearing distance. Further, in order
to store a certain kinetic energy in operation, the flywheel is mounted at one
end of the spindle.
The hammerhead is the main working parts
of a hammer crusher. The weight, shape and material of a hammerhead have a
great influence on the production capacity of the crusher. Hammerhead’s kinetic
energy is proportional to the size and weight of the hammerhead. That is to
say, the heavier the hammerhead is, the greater the kinetic energy of the
hammerhead and the crushing efficiency are. However, the heavier the weight of
the hammerhead, the greater the centrifugal force to spin up, which must have
an impact on other parts of the hammer crusher rotor, so the weight of the hammer
should be moderate. The heavy Hammerhead could weigh tens of kilograms, but
small hammerhead could only weigh a few kilograms, and usually not more than 80
kg. The reasonable choice of hammerhead’s material is very important, because ordinary
carbon steel produced hammerhead for crushing limestone will wear out within a
few days, but the high manganese steel casting hammerhead after the surface
hardening heat treatment can be used for a long time. The current design of hammerhead
has developed into modular structure design from the traditional overall
design. In addition, the development of new materials, especially high
hardness, wear-resistant material was successfully developed, which provides
the guarantee for improvement of the design and performance of the hammerhead.
The
role of the counter plate is to bear the impact of broken materials crushed by
the hammer, and rebound them to crushing area to have next-time impact
crushing. The requirement of design is the place where materials are rebounded
back should be the place where the hammer passes, so that the hammer can crush
the materials again. After several experiments and comparison, the rib is the
best choice. The angular of rib can be very hard and wear-resistant after being
cast and heated.
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