SWDM240B OPERATION & MAINTENANCE MANUAL
(1) Frame (2) Crawler travel mechanism (3).Slewing platform (4). Shed
(5) Counterweight (6) Power system (7) Auxiliary winch (8) Main winch
(9) Cab (10) Luffing mechanism (12) Rotary head (13) Kelly bar
(14) Crowd winch (15) Soil cleaner (16) Pile casing (17) Tool case
See FIG. 2-1 for machine structure.
Main components: under-carriage (frame and crawler travel system), upper-carriage (turntable,
main winch, Auxiliary winch etc.), luffing system, drill mast, rotary head, kelly bar, drilling tool,
cabin, hydraulic system, electrical system etc.
Basic Function and Theory:
Upper-carriage drill work and under-carriage traveling are the main functions for the machine
and the two functions can complete interlock through control system.
When in traveling, engine drives hydraulic pump
，
high pressure oil passing through main valve,
center swing joint enters travel motor and drives traveling planetary to complete crawlers move
forward/backward, left/right and stop.
Crawlers extend and retract, mast up/down, rotary head pressurization are all driven by related
hydraulic cylinders through control valves.
Kelly bar rotation, main/auxiliary winches lifting and turntable slewing utilizes planetary driven
by related hydraulic cylinders through control valves.
Rotary head drives motor and makes Kelly bar rotate, supplying oil to forcing cylinder,
completing drill under rotary head vertical downward pressure.
Total drilling depth and depth of each pass are displayed in the virtual digital display which is
convenient for operator monitoring drill depth.
For transportation, the mast can be boomed down with kelly bar and kelly bar bracket detached.
With the cathead and lower mast folded and crawlers retracted, the drilling rig can move onto
tractor and the counterweight can be removed if road condition does not permit.
2.3.2 Undercarriage
Undercarriage includes frame and travel system etc. (FIG. 2-2)
FIG. 2-2
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