Hole bottom water injection variable-pick multifunctional rock piercing drill of rotary digging pile machine

Abstract

The invention relates to a rock piercing drill of a rotary digging pile machine, in particular to a hole bottom water injection variable-pick multifunctional rock-piercing drill of the rotary digging pile machine, mainly aiming at solving the problems that the strength of a drill pick is decreased after the drill pick of the existing rock piercing drill of the rotary digging pile machine is heated, the consumption of the drill pick is great, oil and water supply pipelines are frequently twisted on a telescopic drill rod and accidents are caused consequently. The hole bottom water injection variable-pick multifunctional rock-piercing drill of the rotary digging pile machine is characterized in that the lower end of a drill rod socket is fixedly arranged on a rotary water tank core body, the lower end of the rotary water tank core body is connected with a drill rod, a rotary water tank jacket is arranged on the outer circumference of the rotary water tank core body, a water inlet joint, a water pipe and an air exhaust and water overflow valve are arranged on the outer wall of the rotary water tank jacket, an anti-rotating casing is arranged on the outer circumference of the rotary water tank jacket, a water injector is arranged on the inner side of the lower end of the anti-rotating casing, a water injection piston of the water injector is connected onto the rotary water tank jacket, a center hole which is communicated with the rotary water tank core body is formed in the drill rod, one end of a high-pressure water pipe is connected onto the water injector, the other end of the high-pressure water pipe is connected into the water injection hole in the rotary water tank jacket and a check valve is arranged in the drill rod. The hole bottom water injection variable-pick multifunctional rock-piercing drill of the rotary digging pile machine has the advantages that the temperature of the drill pick can be kept normal, the wear is reduced, the structure is safe and reliable and the installation and the maintenance are facilitated.

Description

technical field [0001] The invention relates to a rotary pile driver, in particular to a water-injection variable-tooth multifunctional rock drill capable of breaking rock cores and expanding rock holes at the bottom of the hole of the rotary pile driver. Background technique [0002] The various types of rotary pile excavators currently in use, once encountering rock formations during the digging process, it is very difficult for various existing drilling tools to penetrate the rock formations. The pineapple head drilling tools are suitable for rock formations with a uniaxial compressive strength of about 100mpa. -8 hours can drill rock to a depth of about 1 meter, and the barrel core drilling tool is configured to be used on a high-power rotary pile machine. It can be drilled to a depth of about 1 meter in about 2 hours, but it is very difficult to take out the core, and usually requires additional work. After the core is broken, the pick bucket drill is used to catch the ...

AI Technical Summary

Problems solved by technology

[0002] The various types of rotary pile excavators currently in use, once encountering rock formations during the digging process, it is very difficult for various existing drilling tools to penetrate the rock formations. The pineapple head drilling tools are suitable for rock formations with a uniaxial compressive strength of about 100mpa. -8 hours can drill rock to a depth of about 1 meter, and the barrel core drilling tool is configured to be used on a high-power rotary pile machine. It can be drilled to a depth of about 1 meter in about 2 hours, but it is very difficult to take out the core, and usually requires additional work. After the core is broken, the pick bucket drill is used to catch the slag to form a hole. During the process of drilling around the wall of the drill hole, the stone dust in the ring groove prevents the water in the pile hole from flowing down to the tip of the drill tooth in time, and the drill tooth Without timely cooling, the strength of the drill teeth will drop sharply after being heated, and the consumption of the drill teeth will be extremely large. Generally, the depth of the trepanation drill is about 1 meter, and the bullet drill teeth must be replaced once generally. They are produced by Xiangyang Changkan Intelligent Machinery Co., Ltd. Although the hydraulic high-frequency percussion drill at the bottom of the hole can break the core quickly, when the vibrator is working, it is difficult for the outer casing (rotation-stopping casing) to form a stable friction with the rock surface on which it is located, resulting in The casing cannot reliably prevent the outer ring of the rotary joint from co-rotating with its core. As a result, oil and water pipelines often wind around the telescopic drill pipe or break in the pile hole; at the same time, because the vibrator vibrates at the bottom of the hole, It often causes part of the soil layer in the pile hole to collapse. Therefore, the problem that the bottom of the hole of the rotary pile machine is difficult to penetrate the rock has always been a worldwide problem that plagues the efficient construction of the rotary pile machine

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