transfer of drill pipes (to and from the drill rig rack or a support truck) to the drilling position.
The system includes a computer supported joystick, a rod holder and functions for maneuvering the rig’s rod bin.
Rod handler control joystick
Basic functions
The rod handler functions are enabled when the joy- stick’s dead man’s switch button is pressed. The diesel engine must be running. If no functions have been used for 30 seconds or if the engine is stopped, the system has to be enabled again.
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Joystick, dead man’s switch
►The joystick must be in the neutral position when the joystick functions are enabled using the dead man switch before any actuations to the valves are made.
►The Clamp grips or releases a drill pipe with jaws operated by a hydraulic cylinder. Use only when drill pipes are in horizontal position in the pipe bin. To grip: press the button (A).
►The Clamp Travel Motor is activated by moving the joystick forward or backwards. The clamp trams to- wards or away from the cup and drags the drill pipe with it when the button (A) is pressed.
►Tilt Cup. When the drill pipe is loaded into the cup it is rotated to drilling angle using the joystick (left/ right) while keeping the button (A) pressed. ►The Base Table can be raised and lowered up to
1890 mm in order to find a convenient height using the joystick (forward/backwards) with the button (B) pressed.
►Clamp Arm Rotation. The arm must be rotated around the drill pipe in order to ensure that the arm does not interfere with the mast during loading. Press the button (B) and move the joystick left/right. The clamp arm should be in position right above the drill pipe while loading a pipe from the bin.
►The Base Table is slewed from its location behind the pipe bin to the drilling position in front of the mast by moving the joystick (left/right) with the but- ton (C) pressed.
►The Rod Bin Base and Sides are maneuvered for lining up for charging or discharging a drill pipe. Press the button (D) and move the joystick.
71 © 2012 Atlas Copco Craelius AB | 2012-05-15
06 Operation Explorac 220 RC Ed.1
Tram clamp in Tram clamp out
Tilt cup CCW
Tilt cup CW
26000147 A
Rod handler control joystick standard functions
Rod bin Fence Clamp Rotate arm Table Slew table C D A B raise lower up down raise lower in out in out open / close 26000146 A
Overview, control joystick additional functions
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Rod handler, main parts: Slew motion motor (1), clamp (2), arm rotation motor (3), tension support brace (4), base table (5), rod support (6)
♦ If the diesel engine is started the rod handler func- tions are enabled when the dead man switch is pressed. The lever functions are disabled when no functions have been used for 30 seconds or if the diesel engine is stopped.
♦ If the lever is not in neutral when it is enabled with the dead man switch, it must be moved back to neu- tral before any actuations to the valves are made. ♦ If the CAN-messages from the lever fail to appear,
the rod handler lever functions are disabled and the actuations are turned off.
♦ For the three proportional functions -cup rotation, - clamp tram, -and table slew the current to the re- spective valves is, depending on the lever position, between a min and a max current. The min and max currents are adjustable parameters.
72 © 2012 Atlas Copco Craelius AB | 2012-05-15
06 Operation Explorac 220 RC Ed.1
2 1
26000148 A
Rod handler with cup (1), clamp (2)
1
26000149 A
Rod handler, base table (1)
Rod bin
Rod support up/down.
The table has an inductive sensor that indicates its in- ner position. When the table is slewed in and the sen- sor indicates, the rod support cylinder is pressurized upwards for three seconds. When the table is slewed out and the sensor does not indicate, the rod support is pressurized downwards for 3 seconds.
Cup rotation, low speed sector
The cup rotation has a low speed sector around its centre position. In the slow speed sector the speed is 30 % of the normal speed. When changing from low speed to normal speed the transition is gradually made within one second. The change from normal speed to low speed takes 0,1 second. The low speed section is indicated by 2 inductive sensors:
- The backward low speed sensor. If the cup is rotated CW and the sensor indicates, the slow speed sector is entered. If the cup is rotated C-CW and the sensor indicates, the low speed sector is left.
- The forward low speed sensor. If the cup is rotated CW the sensor indicates the slow speed sector is left. If the cup is rotated CCW and the sensor indicates the slow speed sector is entered.
- The cup rotation has an inductive sensor indicating its centre position. If the cup is rotated and the sensor indicates, the movement stops for two seconds. When his time has expired the movement continues if the lever still orders “cup rotation”
A
26000240 A
73 © 2012 Atlas Copco Craelius AB | 2012-05-15
74 © 2012 Atlas Copco Craelius AB | 2012-05-15
07 Maintenance Explorac 220 RC Ed.1