PDF Operator's Manual Cat Bucyrus 49HR Blast Hole Drill - 2 MB
This operator's manual provides comprehensive instructions for the Cat Bucyrus 49HR Blast Hole Drill.
It is an essential resource for operators, covering safety protocols, control systems, and routine maintenance procedures.
Proper use of this manual ensures that drilling operations are conducted safely and efficiently, maximizing the productivity of this powerful mining equipment.
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
SAFETY PRECAUTIONS
General Precautions:
• The employment of qualified maintenance personnel, through a scheduled maintenance
program, is the best way to minimize machine downtime and maximize productivity of
equipment.
• Keep hands, feet, and clothing away from rotating parts.
• Wear a hard hat, safety shoes and protective lenses at all times.
• Replace any and all safety and warning placards if they are defaced or removed from the
machine.
• Think before you act. Carelessness is one luxury the service man cannot afford.
• Excessive or repeated skin contact with sealants or solvents may cause skin irritation. In case
of skin contact refer to the Material Safety Data Sheet (MSDS) for that material and the suggested
method of cleanup.
• Inspect safety catches (keepers) on all hoist hooks. Do not take a chance, the load could slip
off of the hook if they are not functioning properly.
• If a heavy item begins to fall, let it fall, don’t try to catch it.
• Keep your work area organized and clean. Wipe up oil or spills of any kind immediately. Keep
tools and parts off of the ground. Eliminate the possibility of a fall, slipping or tripping.
• Floors, walkways and stairways must be clean and dry. After fluid draining operations be sure
all spillage is cleaned up.
• Electrical cords and wet metal floors make a dangerous combination.
• Regularly inspect for any loose bolts or locking devices and properly secure them.
• Use extreme caution while working near any electrical lines or equipment whether it be high or
low voltage. Never attempt electrical repairs unless you are qualified.
• Check limit switches for proper operation.
• After servicing, be sure all tools, parts or servicing equipment are removed from the machine
and secured in an appropriate storage area.
• Mechanical Brakes are designed for use as static holding brakes only. Use as a motion (dynamic)
brake in emergency situations only.
• Use proper interior and exterior lighting.
• Install and maintain proper grounding and ground fault protection systems.
• Perform functional tests of all safety circuits.
• Allow electrical inspection and maintenance to be performed only by a qualified electrician.
• Use extreme caution when working around drilled holes.
September 2011 7 Manual No. 11060
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
PROPEL MACHINERY
The propel system of this machine is a chainless hydraulic drive system which will allow the separate
tracks to counter-rotate. This capability provides the machine with the capacity to turn completely
around within its own length. Each track is driven by a hydraulic motor and a planetary gearbox
equipped with a hydraulically released, spring activated brake. The machine is capable of 2 different
propel speed ranges. The lower speed range is used for maneuvering in close spaces while the
high speed range is used for tramming in open areas, over long distances.
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
BREAKOUT WRENCH
CABLE REEL
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
RIGHT CONTROL CONSOLE
RIGHT CONTROL CONSOLE - OVERVIEW
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
ACTIVE ALARM
The Active Alarm screen will provide a list of all active alarms and faults that have been initiated on
the machine and have not been RESET. Once an alarm or fault has been sensed, these messages
will remain visible and WILL NOT be removed from this screen until it is RESET.
STATUS SCREEN with Pop-up Ribbon
Any new alarms will pop-up automatically any time that a machine sensor detects a newly occurring
fault or warning message.
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
14. Check the safety restraint cables on the mast. Be certain that the cables and supports are in
good repair with no cracks, missing or loose hardware or any damage that could affect their
effectiveness.
15. Every 160 hours inspect the upper auxiliary winch sheaves. All pins, keepers and hardware
should be secured.
16. Check the machinery house air filtering fan duct to see that it is clear of obstructions.
17. Inspect dust collector hoses for integrity.
ONBOARD INSPECTION
1. Inspect the air compressor lubrication lines for leaks. Correct any leaks found immediately.
2. Check the condition of the air compressor intake filter. Replace the filter cartridge if the red
flag is visible in the service indicator. Empty the dust hopper and clean the pre-cleaner element.
Inspect the housing and ductwork for damage or leaks. Repair or replace leaking components.
3. Check the oil level in the hydraulic tank. Fill the tank to the proper level as described on the
instruction plate on the tank.
4. Check hydraulic system for leaks. Correct all leaks immediately and clean up all oil spills
immediately.
5. If the machine is equipped with a bit lubricator for the main air system, check that the lubricator
is full.
6. Inspect the automatic lubrication central pumping stations for proper operation. Check the
supply of lubricant; refill tank as necessary.
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
NOTE: When using the counter-rotation method for turning, have a helper available who can
watch that the trail cable does not get fouled and/or torn from the main junction box or
cable reel.
NOTE: The ability of the machine to counter rotate is dependent on the surface on which the
machine is setting. A soft surface will cause the crawlers to dig in and machine to bog
down.
NOTE: The propel brakes are released whenever either joystick is lifted from its mechanical
neutral detent. The propel brakes are set when both joysticks are returned to their
neutral detent and released.
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
6. Rotate the pulldown force rheostat in the pulldown direction to lower the rotary/pulldown unit.
The farther the rheostat is turned to the left the faster the unit will be lowered.
7. When the hoist/pulldown operations are complete, set the hoist/pulldown speed rheostat to
the OFF position and then turn the hoist brake switch to the SET position.
CAUTION: Whenever the hoist/pulldown speed rheostat is in the OFF position,
the hoist brake switch must be in the SET position to prevent the
rotary/pulldown unit from creeping downward due to the weight of
the unit.
AUXILIARY WINCH OPERATION
To operate the auxiliary winch proceed as follows:
1. Place the operation mode selector switch in the MAST/WINCH
position.
2. To hoist the auxiliary winch line, lift and move the winch joystick,
located on the right console, forward. To stop the line, return
the joystick to the NEUTRAL position.
3. To lower the winch line, lift and move the joystick rearward. To
stop the line, return the joystick to the NEUTRAL position.
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
13. When the stabilizer begins to turn with the drill pipe, check the joint between the stabilizer and
the pipe. The shoulders on the pipe and stabilizer must be together. If there is clearance
between the shoulders, it will be necessary to tighten the joint some more before the stabilizer
is released. If the shoulders of the pipe and stabilizer are contacting, the joint is made up.
Installation of the drill bit is the last step in preparing the tool string.
To install the bit, proceed as follows:
1. Hoist the completed drill pipe/stabilizer assembly 2 to 3 ft (0.6 to 0.9 m) off the drill deck.
Place the bit basket (furnished with machine) into the hole left by the guide bushing in thedrill
deck. Remove all personnel from the drilling deck and the immediate area. Turn on the main
air stream to blow any contaminants from the drill pipe and stabilizer.
2. Place the bit into the bit basket. Coat the threads and shoulders of the bit and stabilizer with
drill pipe thread compound.
3. Turn the rotary rheostat clockwise until the tool string begins to turn at approximately 5 RPM
as shown on operator’s display terminal operator’s display screen. Release the hoist brake
and slowly lower the rotary/pulldown unit and tool string onto the bit. Lower the drive unit in
small increments until the threads catch and the stabilizer starts to thread itself onto the bit.
As soon as the threads start to catch, set the hoist brake and let the stabilizer screw itself
onto the bit.
4. When the joint is tight the rotary unit will slow down and the rotary load meter will show an
increased load. At this point return the rotary rheostat to the neutral position.
5. After making the bit to stabilizer joint, hoist the rotary drive unit to allow the bit basket to be
removed. Remove the bit basket and store it in a safe place.
6. Lower the completed tool string so that the guide bushing is seated in the hole in the drill
deck. Set the hoist brake and press the control ENABLE button. The tool string is now
complete for single pass drilling or for the first pass of multiple pass drilling.
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
WATER INJECTION SYSTEM
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BI624143
Bucyrus International, Inc.
49HR Blast Hole Drill
In the case where the material is conglomerating into large pieces, these pieces fall back down to
the bottom of the hole and are recycled through the bit to be broken up. If the amount of recycled
material is too great it will accumulate at the bottom of the hole and restrict the main air stream. To
keep this material at a minimum, clean the hole periodically. When hoisting the tool string, allow the
material to be ground by the bit and fall to the bottom of the hole before cleaning the hole.
In the case where the material is caving from the sides of the hole, treat the formation as
unconsolidated and drill according to the procedure detailed in this manual for unconsolidated
material.
It is important when drilling through difficult formations to constantly monitor the machine and tool
string. Allowing the tool string to become stuck is an expensive mistake and can be avoided by
cautious drilling practices. Reaming and cleaning the hole may only take a few moments, but it
could be the difference between an abandoned hole and tool string and a successfully completed
hole.
ANGLE DRILLING
NOTE: When moving the mast for angle hole drilling on machines with mast lengths of 65 ft. or
more, the drill pipe must be stored in the racks and the rotary head lowered to its
lowest position.
Angle drilling follows the same general drilling procedures as vertical drilling. The main difference in
the drilling procedures, besides the fact that the hole is at an angle, is the need to monitor the
condition of the different systems more closely while angle drilling. The differences in the operating
procedures for the different systems on the machine are limited to handling the tool string and
raising and lowering the mast to the proper drilling angle.
When drilling an angle hole, monitoring of the system indicators such as the drilling air pressure,
the rotary load and the machine vibration, becomes more critical than when drilling a vertical hole.
The reason these monitors become more important is the fact that an angle hole will tend to
wander downward as the hole is being drilled. This wandering is due to the drill steel assuming a
natural camber as it is being extended past the guide bushing. This camber is unavoidable and
becomes worse as the angle of the hole approaches 25 degrees.
The force of gravity continually acts upon the tool string causing it to bend downward. This downward
bending is known as the camber of the drill pipe. This camber causes the hole to be drilled with a
gradual bend in it. This causes the drill pipe to contact the side of the hole, increasing the load on
the rotary motor. This also tends to inhibit the bailing of the hole since the cuttings are not flowing
vertically. The flow of the bailing air (and suspended cuttings) must be diverted around the points
that the drill pipe is resting on the side of the hole. This contributes to the increased air pressures
needed to drill an angle hole. The vibration of the tool string will be increased while drilling at an
angle, due to the tool string resting on the side of the hole, rather than on the bottom.
September 2011 107 Manual No. 11060