Posthole digger

Abstract

The invention relates to a pile hole digger, which comprises a main frame, a hoister and a digger. The hoister is installed on the main frame; the digger is connected with the steel wire rope on the fixed pulley of the boom of the hoister; the digger comprises an operating slide bar, a gravity hammer, a gyro steel solid, an operating fixing ejector rod, a pawl and a gravity plate, wherein, the operating slide bar passes through the gravity hammer and the center of the gyro steel solid at the lower part of the gravity hammer, the gyro steel solid is connected with the gravity hammer, a slide bar dead point bolt is arranged at the lower part of the operating slide bar, and an inner dead point sleeve is arranged in the slide bar closed to the lower end; an umbrella supporter device is fixed at the lower end of the operating slide bar, a slide bar return spring is arranged between the inner dead point sleeve and the umbrella supporter device, and a pawl expanding support bar is arranged between the umbrella supporter device and the pawl body; the gyro steel solid is connected with the upper part of the operating fixing ejector rod; the operating fixing ejector rod is connected with the pawl, the pawl is connected with the gravity plate, and the lower end of the operating fixing ejector rod is fixed on the gravity plate. The pile hole digger has the advantages of light weight, convenient operation and low noise, and is applied to the pile hole digging in the worksites with various complex with geologic structures.

Description

technical field [0001] The invention relates to a pile hole digging machine, in particular to a hole digging machine used for drilling foundations of buildings, bridge foundations, highways and railway soft mud to reinforce pile holes. Background technique [0002] In the past, pile holes in building foundations, bridge pile holes, highways, and railway soft mud reinforcement pile holes were mostly excavated manually, which is labor-intensive, low-efficiency, high-cost digging, and is a high-risk operation with high safety risks. Therefore, people have developed various hole digging machines, such as auger drilling rigs, rotary drilling rigs, Luoyang shovels, "Big Macs", pile hammers, etc. However, due to the vast territory of our country and the ever-changing geological structure, especially the complex rock-soil structure of the underground layer, the existing hole digging machines have their own defects, and it is difficult to meet the drilling requirements of various com...

AI Technical Summary

Problems solved by technology

However, due to the vast territory of our country and the ever-changing geological structure, especially the complex rock-soil structure of the underground layer, the existing hole digging machines have their own defects, and it is difficult to meet the drilling requirements of various complex geological structures.

For example, the auger drilling rig can only dig small diameter holes; the rotary drilling rig digs holes in the underground structure mixed with yellow mud and pebbles, and the efficiency is very low; when the Luoyang shovel digs holes, it is difficult to spit out the mud and the efficiency is low; the "Big Mac" is heavy and heavy. It is difficult to move; the diesel pile driver is noisy, which affects the work and life of people near the construction site

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