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Explore the working principle and application of the screw drill bucket

2023-09-27
Spirger pipe is a commonly used foundation engineering construction equipment, which cuts the soil and removes it. It is often used in hole digging, cast-in-place piles and deep foundation pit engineering. This paper will explore the working principle and application of the screw bucket to help readers to better understand and apply the screw bucket.
The working principle of the screw bucket can be briefly described as the following steps: approach positioning, precast hole wall, rotary excavation, soil discharge, and end of drilling. In practice, the screw drill bucket is usually composed of the following main components: drill bucket mast, hole wall protection device, drill bucket blade and drive device.
First, the burger requires approach positioning, which involves determining the drilling location and direction, and making the necessary measurements and markers. Next, a wall protector (such as casing or guide) is used to reinforce the wall and prevent its collapse. This ensures the soil and keeps the holes stable.
Subsequently, the auger is put into the hole through the drive device and the rotary excavation operation is initiated. The blades of the auger cuts the soil by rotating and draining it into the surrounding void. At the same time, the drill bucket mast applies a certain thrust downward, so that the drill bucket can descend and rotate smoothly
Choosing the proper rotation speed and propulsion speed is critical during excavation. If rotated too fast, it may cause the soil to accumulate on the bucket, affecting the excavation effect; if advancing too fast, it may cause the bucket to get stuck or too deep in the soil. Therefore, the operator needs to adjust and control according to the specific situation.
When the designed drilling depth is reached, the rotation and propulsion movements need to be stopped, and the drill bucket is slowly lifted. During lifting, a powerful hydraulic system or other mechanical device is used to drain the remaining soil to ensure that the drilling is completely cleaned.
Spirger pipe has been widely used in various foundation works. For example, in drilling engineering, screw nels can efficiently excavate holes of different diameters and depths for installation of cast-in-place piles, underground pipes, etc. In addition, the screw pipe can also be used in deep foundation pit engineering, realizing the soil support during excavation.
In a word, the screw drill bucket is an important foundation engineering construction equipment, using the principle of rotary cutting soil, often used in hole digging, cast-in-place pile and deep foundation pit engineering. Understanding its working principle and application is of great significance for the construction personnel to choose the appropriate equipment and operation methods, which can improve the construction efficiency and quality, and reduce the engineering risk.
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