Down-the-hole drill rod What are the process principles of drill pipes?

As industry continues to advance, people are accumulating more and more tools—tools that are becoming increasingly diverse. Among them, the soil-drilling auger is a commonly used type of active drill rod. But what exactly is its working principle? ? Below Down-the-hole drill rod Let me tell you about it:

When designing a soil sampling drill, the primary challenge is how to minimize soil resistance. As the drill cuts into the ground during sampling, it encounters various forces exerted by the soil on the cutting edge—primarily penetration resistance, friction, and adhesion, among others.

A traditional method to reduce soil cutting resistance is to minimize the contact area between the soil and the drill bit, thereby decreasing adhesion and cutting forces—and ultimately reducing overall soil resistance to achieve the goal of improving lubrication and lowering drag. Down-the-hole drill rod Discovery This method can effectively reduce soil resistance to some extent, but it becomes less ideal when dealing with harder soils.

The spiral soil sampling drill uses a method involving penetration, cutting, loosening, lifting, and ejecting the soil to quickly collect samples. The drill consists of a sleeve and a helical drill rod, with the blade tips of the helical rod designed in a knife-like shape. Down-the-hole drill rod During sampling, the sleeve is vertically driven into the soil under hydraulic pressure, while the helical drill rod rotates simultaneously, cutting and fragmenting the soil. The fragmented soil is then conveyed upward through the combined action of the blades and the sleeve, eventually exiting at the top of the sleeve toward the soil outlet. Once the sleeve is lifted, gravity causes the soil to flow directly into the collection box via a flexible hose, completing the soil sampling and collection process.