Page 8
Test Chain – INSTRUCTION MANUAL
7ML19985JD01
Reels may have from one to three chain compartments (widths vary according to the
width of the specific test chain).
•
Compartment width is one to two inches wider than the length of the chain roller
pins or shafts. Each compartment is made of ¼” (6.5 mm) thick discs available in
diameters of 36”, 42”, and 48" (91.5, 107, 122 cm), depending on the chain length.
•
Each disc has a small through-hole adjacent to the 4” (10 cm) diameter shaft centre.
This is used to insert the wire rope and fittings needed to attach the test chain to the
reel.
•
Reels are supplied with 30 feet (9.14 m) of ¼” (6.5 mm) wire rope and two clamps per
chain.
•
Reels are painted standard grey epoxy and are shipped bolted to wooden skids
•
Reel frame construction is all mild steel structural components that are welded and
bolted. The disc compartments are welded to a 4” (10 cm) diameter tube, or pipe,
serving as the rotating drum. A solid cold rolled drive shaft is welded to the drum
assembly for attachment to the gear-motor and pillow blocks for mounting to the
main support frame.
•
A curved slide plate is welded to a cross member to prevent chain snagging at the
cross member.
Reel Horsepower
•
Motor horsepower varies with application loading and are available in 0.75, 1. 1.5, 2,
3, and 5
•
Of primary concern is the ability of the reel to handle the total test chain weight and
the associated forces needed to pull the chain along the belt and up the reel.
•
The gear-motor horsepower is based on these force requirements and the
intermittent usage for the calibration process.
•
Typical reel gear-motors have NEMA D rated starting characteristics, a totally
enclosed non-ventilated (TENV) housing, intermittent (30-minute duty) motor
operating at either 230 or 460 volts, 3 cycle, 50 or 60 Hz. (other voltages are also
available).
•
The gearing ratios are approximately 180 to 200:1 with output RPMs in the 8 to 10
RPM range. Depending on the chain parameters, this affords an average chain
rollout time of about 3 minutes to 30 seconds.
Note:
• Motor starters, push button stations, and support legs from the reel to the
conveyor frame are supplied by others.
• Vertical support legs from the reel frame to the conveyor are to be supplied by
others. Provision is made for direct attachment to the customer-furnished
supports by short vertical leg sections from the reel support cross members.
Test Chain.book Page 8 Tuesday, April 19, 2005 9:34 AM
Summary of Contents for milltronics TEST CHAIN
Page 1: ...Instruction Manual April 2005 TEST CHAIN milltronics ...
Page 4: ...ii ...
Page 18: ...Notes ...
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