Excavating drilling machine

Abstract

The invention relates to an excavating drilling machine comprising a base, an upper lathe, a mast, a drill rod and a drill head, wherein the upper lathe is provided with a hydraulic system and an electronic control system; and the drill head comprises a straight hole drill head and a bottom-expanding drill head, wherein the straight hole drill head and the bottom-expanding drill head are respectively arranged on the drill rod in an alternating way. The excavating drilling machine can simultaneously realize the straight hole drilling operation and the bottom-expanding bottom-expanded operation, that is to say, can implement the diameter-expanding excavation on the lower part of a foundation after a straight hole is drilled to a certain depth and automatically fetch the soil; and in addition, the invention can sufficiently meet the requirements for mechanized construction of the excavating foundation of an electric transmission line.

Description

technical field [0001] The invention relates to an excavation drilling rig in a field, in particular to an excavation drilling rig. Background technique [0002] At present, the excavation of domestic transmission line excavation is carried out manually with small tools (shovels, simple cranes). The efficiency of hole formation is low, and landslides may occur during the construction process, resulting in high safety risks. Xiangjiaba-Shanghai, Jinping-Sunan ±800kV UHV DC transmission project adopts large section 6×720mm 2 and 6×900mm 2 Compared with ultra-high voltage transmission lines, conductors have a larger digging foundation design. If manual digging is still used, the construction difficulty and safety risks will further increase. [0003] Since the basic structure of transmission line excavation is the upper straight hole and the bottom enlarged hole, if the rotary drilling rig widely used in the construction industry is used for mechanized excavation, only the st...

AI Technical Summary

Problems solved by technology

[0002] At present, the excavation of the foundation of domestic transmission lines is excavated manually with small tools (shovels, simple cranes), the efficiency of hole formation is low, collapse may occur during the construction process, and the safety risk is high

Xiangjiaba-Shanghai, Jinping-Sunan ±800kV UHV DC transmission project adopts large section 6×720mm 2 and 6×900mm 2 Conductors, compared with ultra-high voltage transmission lines, have a larger excavation foundation design size, if the manual excavation process is still used, the construction difficulty and safety risks will further increase

[0003] Since the basic structure of transmission line excavation is the upper straight hole and the bottom enlarged hole, if the rotary drilling rig widely used in the construction industry is used for mechanized excavation, only the straight hole can be drilled, and the bottom enlarged hole is still Manual excavation is required, and the safety risks caused by manual excavation cannot be fundamentally changed

[0004] In addition, since the construction sites of transmission lines are mostly complex terrain conditions such as mountainous gullies, the trafficability of vehicles is poor, and the existing rotary drilling rigs are too large to be suitable for foundation excavation operations of transmission lines

Images