SUNWARD SWDM40 - Machine Work; Rig Trial Running; Drilling Tool Selection; Hole Opening and Sleeve Installation

SWDM40 OPERATION & MAINTENANCE MANUAL
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5.5 MACHINE WORK
5.5.1 Rig Trial Running
According to chapter "Control", operate the travelling, crawler extension, upper-carriage
rotation, big arm luffer, erect mast, main winch, auxiliary winch, Rotary drive rotation,
compression and pressurized winch wirerope extension, confirm that all movements are normal.
★ Notice ： Running rig slowly in testing, and do function test carefully to prevent
personal injury and equipment accidents from malfunction and failure.
5.5.2 Drilling Tool Selection
During construction, choose different drilling tools base on due soil condition, which can
advance work efficiency and save cost. Main drilling tools features and suitable stratum are
showed in table 4-1. Confirm bit diameter according to construction drawing. Normally, bit
diameter is smaller 1cm ～ 2cm than hole diameter. See Chapter “7.2 Selection of Drilling
Tools”
5.5.3 Hole Opening and Sleeve Installation
1. Measuring
Measure and calculate construction piles layout in the plane graph with a theodolite or laser
ranging rod according to the pre-setting red line point and direction. Use polar coordinate to
calculate angle and distance. Use altometer and ranging rod to confirm pile location in site.
2. Rig positioning
Drive rig in pile side，aim bit top to pile location mark. If possible, maximum retract mast, and
check whether existing barrier in swing radius.
3.Hole opening
After aiming hole location, use underreaming bit to drill hole, hole diameter should match
barrel.
4.Sleeve installation
Use main winch and stabilizer to install barrel, and also can fit barrel driver to install it. Use
main and Auxiliary winch to pull up barrel. But when it is difficult to lower/pull up barrel by
above mentioned method, please use special equipment to do it. Such as rubbing machine,
vibrator hammer etc.
★Special Note：When using stabilizer and Rotary drive to press down sleeve, operate slowly; Do not
use winch emergency stop to attack barrel which will badly damage machine.
When the hole is open to suitable depth, use auxiliary winch to move barrel to hole location,
then use bucket and service stabilizer to press barrel into ground. It should keep barrel pressed
vertically, barrel surrounding is fully filled soil. Confirm barrel length and embedded depth
according to soil condition and underground water condition. In normal ， barrel diameter is
bigger 20cm than pile diameter.