ASTEC Peterson 6700B, Руководство по безопасности оператора

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Material Grinding
The machine grinds material by forcing it between the
rotor bits and the anvil then between the bits and the
grates.
Materials forced through these restriction points are
broken or crushed into particles small enough to pass
through the grate openings to fall onto the discharge
conveyor.
The material grinding components (Figure 18) are the:
• Rotor and rotor bits
• Anvil
• Grates
An impact release system protects the grinding parts
from excessive shock loads.
Rotor and Rotor Bits
The rotor is driven by the engine through the hydraulic
clutch and drive belts. Rotor side walls are protected by
abrasion-resistant, replaceable wear liners.
Reversible bits mounted on the rotor tear, rip, and rend
materials by forcing them against the anvil and through
the grates.
Different types of bits are available that provide effec-
tive grinding for a wide range of feed materials. The bits
must be inspected on a regular basis. Refer to Section
5000 in the
6700B Maintenance Manual.
Figure 18: Anvil, Rotor, Bits, and Grate #4
Anvil
The anvil (Figure 18 and Figure 20) is the stationary,
heavy, hardened steel bar that slices material into
smaller pieces when the rotor bits force material against
it. It must be inspected for wear on a regular basis (refer
to Section 5000 in the
6700B Maintenance Manual).
A hydraulic cylinder above the compression roll hous-
ing is used to open and close the anvil housing. The
housing must be raised to change or reverse the anvil, or
to replace grate #1. For instructions on lifting the anvil
housing, refer to Section 5000 in the
6700B Mainte-
nance Manual .
Grates and Shear Bolts
Material in the grinder is forced through the grates
(Figure 20). The size of the holes in the grates deter-
mines the size of the finished product.
Grate #1 is attached to the anvil housing. Grates #2, #3,
and #4 rest in the grate support. The grate support is
secured by jacking bolts. Each jacking bolt (Figure 19)
has a shear bolt designed to break if excessive force is
placed on the grates. Shear bolts should be checked
daily. Shear bolts are shown on Figure 115 and
Figure 116 on page 79.
Figure 19: Locations of Grate Jacking Bolts
1
2
3
4
1. Anvil
2. Housing Wear Liners 3. Rotor with Bits
4. Grate #4
F05533
F04546
1. Grate Support 2. Grate Jacking Bolt
Assemblies
1
2
2