Today we'll discuss four "don'ts" regarding the maintenance of rotary drilling rigs.#auger and drill#
Four "Don'ts" for Maintaining a Rotary Drilling Rig
1. Drill rods and drill bits are only for drilling pile holes. They must not be used for soil transfer, transportation, or site leveling. Never immerse the drill rod in liquid concrete. Drilling should only begin when the drill bit touches the bottom of the hole.
2. When drilling through sand or gravel layers, the operator must be especially careful not to drill too deep at once. Doing so will cause the hole diameter to narrow, leaving no gap between the drill bit and the hole wall, preventing the drill bit from rotating or being lifted, leading to serious accidents such as drill bit jamming.
3. Select a suitable drill bucket according to the geological environment. Choosing a drill bucket suitable for the geological conditions improves work efficiency and avoids serious accidents such as drill bit burial and jamming.
4. When using a mechanically locked drill rod, carefully observe the withdrawal of the outer section of the drill rod as it is pulled out of the pile hole. If the outer section of the drill rod is prematurely pulled out of the power head, it indicates that a section of the drill rod failed to fully unlock during retraction.#auger and drill#
In this case, the following steps must be taken:
(1) Immediately stop the main winch's lifting action to prevent the drill rod from opening on its own during lifting. The unlocked section of the drill rod may slip freely and cause it to fall. A fallen section can cause severe damage, potentially rendering the entire drill rod and the borehole unusable.
(2) Slowly lower the drill rod back into the bottom of the borehole, reverse the drill rod, and confirm that it is unlocked before pulling it out.
(3) Maintain the rotary drilling rig. After emptying the soil, remove the drill rod for inspection.
(4) Open the drill rod and thoroughly inspect and repair it.#auger and drill#
