Support with fixable front end for horizontal directional drilling machine

Abstract

The invention discloses a support with a fixable front end for a horizontal directional drilling machine. The support comprises a base, a sliding sleeve rod, a hydraulic oil cylinder, a sliding sleeve, a hydraulic motor, a drilling rod and a reversing valve, wherein the base is fixedly arranged at the front end of the horizontal directional drilling machine through a clamping rack; the sliding sleeve rod and the hydraulic oil cylinder are fixedly mounted on the base, and are connected with the sliding sleeve; the hydraulic motor is connected with the drilling rod and the sliding sleeve respectively; and the reversing valve is connected with the hydraulic motor through a hydraulic oil tube. When the front end of the drilling machine is fixed, the hydraulic motor positively rotates so as to drive the drilling rod to rotate. Meanwhile, the hydraulic oil cylinder does withdraw motion; the sliding sleeve drives the hydraulic motor to move in a base direction through a connection piece; furthermore, the drilling rod gradually and rotatably drills into soil, so that the front end of the drilling machine can be fixedly arranged; and otherwise, the hydraulic motor reversely rotates, the hydraulic oil cylinder extends out, and the drilling rod gradually retreats from the soil. The support provided by the invention has the advantages that the drilling machine can be prevented from being up-warped at the front end in a working process, and the offset phenomenon can be prevented from occurring in a drilling process, so that the drilling precision and the drilling efficiency can be ensured.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a support used for fixing the front end of a horizontal directional drilling machine. Background technique [0002] The horizontal directional drilling rig first appeared in the 1970s. It is a new type of underground pipeline construction engineering machine designed and developed based on the advanced "trenchless technology" concept. It is a combination of traditional highway drilling and oil field directional drilling technology. [0003] At present, because the horizontal directional drilling rig adopts full hydraulic and power drive technology, and has the functions of propulsion, rotation, back expansion, back support and driving of the traveling device, it has become a popular construction method nowadays and can be used for conveying Oil, natural gas, petrochemical products, water, sewage and other substances, as well as construction of various pipelines for...

AI Technical Summary

Problems solved by technology

[0004] However, during the drilling process, due to the excessive resistance, the front end of the horizontal directional drilling rig often tilts up, so that the propulsion force cannot be increased or the propulsion force is insufficient, or the rig drifts, which affects the drilling quality

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