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Righting mechanism, drilling rod structure and engineering machine using same

A technology of drill pipe and outer rod, which is applied in the field of construction machinery and drill pipe structure, which can solve the problems of large telescopic stroke of drill pipe, insufficient drilling precision, and hole inclination, so as to improve the hole forming precision and prevent the phenomenon of drilling deviation Effect

Inactive Publication Date: 2014-02-26
BEIJING SANY HEAVY MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Righting mechanism, drilling rod structure and engineering machine using same
  • Righting mechanism, drilling rod structure and engineering machine using same
  • Righting mechanism, drilling rod structure and engineering machine using same

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Embodiment Construction

[0012] Below will combine the preferred embodiment of the present invention figure 1 and figure 2 , clearly and completely describe the technical solutions in the embodiments of the present invention.

[0013] The present invention provides a centralizing mechanism for use in a drill pipe. The centralizing mechanism includes at least two centralizing devices 5, each centralizing device 5 has the same length from the center to the outer end surface. In the following, the drill rod structure 100 with the stabilizing mechanism is taken as an example for explanation. The drill rod structure 100 in the preferred embodiment of the present invention includes four drill rods, which are respectively the first drill rod 11, the second drill rod 12, the third drill rod 12 and the fourth drill rod 14, and the four drill rods are set in turn. connected together.

[0014] The first drill rod 11 is the outer rod of the drill rod structure 100. The first drill rod 11 has an open end, and...

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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. 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/10E21B19/10
Inventor 水俊峰冯建伟
Owner BEIJING SANY HEAVY MASCH CO LTD
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