Cutting type reamer

Abstract

The invention relates to a cutting type reamer which comprises a waist band and a drill rod. The drill rod is supported by cross rods to be fixedly connected to the center of the waist band, a plurality of reaming rods are fixedly connected between the inner wall of the waist band and the outer wall of the drill rod, a plurality of alloy blocks are evenly distributed on the lower end face of the waist band and the outer walls of the reaming rods, the reaming rods are symmetrically arranged relative to the center of the drill rod, the drill rod and the reaming rods are of a hollow structure and are communicated, the cross rods are of an upper-layer and lower-layer structure, the cross rods of the upper layer and the lower layer are arranged in a staggered mode, the cross rods of each layer are symmetrically arranged relative to the central axis of the drill rod, and a plurality of alloy blocks are fixedly connected with the lower side walls of the cross rods. The cross rods are of a hollow structure, and are communicated with a central through hole of the drill rod. The cross rods of the dual-layer structure are additionally arranged, the alloy blocks are arranged and combined with the reaming rods, secondary stirring and smashing on soil and broken stone are achieved, large soil and broken stone are avoided, and compared with original single-support cross rods, reaming efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of geological exploration equipment, in particular to a hole reamer. Background technique [0002] In the prior art, such as figure 1 , figure 2 The cutting reamer shown includes a belt 1 and a drill rod 2. The drill rod 2 is a hollow structure, which is supported and fixed in the center of the belt 1 by means of a cross bar 3. The inner wall of the belt 1 and the outer wall of the drill rod 2 are also symmetrical. The reaming rod 4 is fixedly connected with an oblique setting, and the reaming rod 4 is also a hollow structure. The outer wall of the reaming rod 4 and the lower end surface of the belt 1 are evenly distributed with alloy blocks 5, and the reaming rod 4 communicates with the drill rod 2. When the reamer rotates at a high speed and reams, the upper end of the drill pipe 2 injects clear water, and the clear water flows out from the lower end of the drill pipe 2 and the sidewall of the reaming rod 4 to re...

AI Technical Summary

Problems solved by technology

This kind of cutting type reamer has the following disadvantages: the soil cannot be cut during the drilling and reaming process, and large pieces of soil are easily stuck between the belt and the cross bar, causing damage to the reamer and other components, resulting in low efficiency

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