Hole cleaning drilling tool

Abstract

The invention discloses a hole cleaning drilling tool, which relates to a device for collecting deposited residual soil at the hole bottom and aims at providing the hole cleaning drilling tool with the advantages that the structure is simple, the cost is low, the operation is simple and convenient, and the work efficiency is high. The hole cleaning drilling tool comprises a drilling tube, wherein the upper end of the drilling tube is provided with a connecting component connected with a drilling rod, the lower end of the drilling tube is connected with an arc-shaped side plate, the arc-shaped side plate has the same radius as the drilling tube and is concentric with the drilling tube, the lower end of the arc-shaped side plate is connected with a corresponding fan-shaped bottom plate, a center shaft is arranged in the drilling tube, the lower end of the center shaft is fixedly connected onto the fan-shaped bottom plate, a baffle plate is fixedly connected between one side edges of the center shaft and the arc-shaped side plate, the lower edge of the baffle plate is fixed and connected with the fan-shaped bottom plate, a soil collecting plate capable of rotating around the center shaft is arranged on the center shaft, the lower edge of the soil collecting plate is slightly lower than the plane of the fan-shaped bottom plate, a downwards inclined support leg is arranged on one side surface of the soil collecting plate facing the baffle plate, and the lower end of the support leg is a little lower than the lower edge of the soil collecting plate.

Description

technical field [0001] The invention relates to a device for collecting sediment at the bottom of a hole, in particular to a drilling tool for cleaning sediments such as stones and sand at the bottom of a pile hole. Background technique [0002] Pile foundation is a commonly used foundation form in the field of construction, and bored piles occupy a dominant position in the application of pile foundations due to their unique advantages. However, no matter what type of pile is designed, the requirements for the thickness of the bottom sediment before concrete pouring are relatively strict, because the thickness of the bottom sediment directly affects the bearing capacity of the pile. In engineering practice, the most important process in the construction of bored piles is how to remove the sediment at the bottom of the hole, that is, cleaning the bottom and cleaning the hole. The traditional bottom cleaning method is to use a conduit to connect to the mud pump before concret...

AI Technical Summary

Problems solved by technology

The traditional bottom cleaning method is to use a conduit to connect to the mud pump before concrete pouring, use positive circulation or reverse circulation to clean the bottom, and sometimes use a mud bucket to dig out slag to clean the hole. These bottom cleaning technologies have the following disadvantages: 1. Cleaning effect Unsatisfactory, affecting the bearing capacity of the pile foundation

However, this method also has some disadvantages: 1. During the construction process, it is necessary to excavate the mud pool and configure equipment such as mud, conduits, and air pipes, which has high cost and complicated process; 2. For the bottom cleaning of large diameter pile holes, especially It is a reaming pile, which requires a higher configuration of the air compressor unit

Images