Righting mechanism, drilling rod structure and engineering machine using same

Abstract

The invention discloses a righting mechanism, a drilling rod structure and an engineering machine using the same, wherein the righting mechanism comprises at least two righting devices which are respectively fixed on an outer rod and a core rod of the drilling rod; the lengths of all righting devices from centres to outer end surfaces are equal. Each righting device includes: a righting ring and at least two pile diameter lengthen plates. The at least two pile diameter lengthen plates are symmetrically arranged at outer surface of the righting ring. Each pile lengthen plate includes: a body and an arc support plate. The arc support plate is fixedly connected to the outer end of the body. The righting mechanism can support against the inner wall of the pile hole to right the drilling rod and prevent the drilling hole from deflecting so as to improve hole-forming precision.

Description

technical field [0001] The invention belongs to the field of engineering machinery, and in particular relates to a centralizing mechanism, a drill pipe structure using the centralizing mechanism, and engineering machinery. Background technique [0002] With the vigorous construction of infrastructure such as highways and high-speed railways in our country, rotary drilling rigs have been rapidly developed and widely used. However, along with it, there are still some problems in the field construction process. For example, with the continuous lengthening of the pile hole depth required in the project, the telescopic stroke of the drill pipe is also increasing. When the drill pipe is extended to a certain length Sometimes, because there is no reliable centralizing device on the upper sections of the drill pipe, the drilling accuracy is often insufficient, which makes the problem of hole inclination become increasingly prominent. If there is a problem of drilling deviation at t...

AI Technical Summary

Problems solved by technology

However, along with it, there are still some problems in the field construction process. For example, with the continuous lengthening of the pile hole depth required in the project, the telescopic stroke of the drill pipe is also increasing. When the drill pipe is extended to a certain length Because there are no reliable righting devices on the upper sections of the drill pipe, the drilling accuracy is often insufficient, which makes the problem of hole inclination become increasingly prominent

If there is a problem of drilling deviation on the construction site, it will not only seriously affect the normal construction progress, but also consume materials and labor

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