Double full casing pipe one-time rotary-cutting pile removing device and pile removing method thereof

Abstract

A double-full sleeve disposable rotary cutting pile clearing device and its pile clearing method. The pile clearing device includes a chassis, a main mast and a hoist installed on the chassis. A power head is arranged on the main mast in a sliding manner, and the power The power head is connected to the winch through the traction rope wrapped around the pulley on the main mast; the power head is respectively connected with an outer full casing in a detachable manner downwards, and an inner full casing is connected in a fixed manner, and the outer full casing It is arranged coaxially with the inner full sleeve; the inner full sleeve is ring-shapedly provided with multiple sets of telescopic and amplitude-changing cutting assemblies at the bottom end of the side away from the power head. Through a reasonable structure, the present invention realizes the one-time rotary cutting pile cleaning treatment of the target pile, and compared with the prior art, it reduces the overall use of devices and equipment of the pile cleaning device, and reduces the use cost. At the same time, the cleaning The pile device not only works fast, but also has high efficiency, which greatly meets the needs of engineering construction.

Description

technical field [0001] The invention belongs to the technology of removing waste pile foundations in the technical field of civil engineering, and in particular relates to a double-full casing one-time rotary cutting type pile cleaning device and a pile cleaning method thereof. Background technique [0002] With the development of national economic construction and the rise of rail transit, it is often necessary to remove the waste pile foundation remaining in the ground. And the removal of waste pile foundations in the prior art is carried out by using a special-purpose hydraulic full-sleeve graded pile-cleaning machine. The part can drive the full casing to rotate and drill down. The working process of the pile clearing machine is as follows: first, the full casing welded with the cutting drill bit at the bottom is rotated and sunk downward into the soil, so that the full casing is eccentrically inserted into the waste pile for about 6m, and then the full casing and the w...

AI Technical Summary

Problems solved by technology

[0003] There are following defects in the above-mentioned pile clearing machine and pile cleaning method thereof: first, this pile clearing machine is the mode of twisting off the waste pile, and the longer the waste pile body needs the larger the torque, and the torque that the pile clearing machine can provide is limited , which leads to the limited length of the one-time twisted waste pile section, and the pile can only be cleared step by step. For example, a 30m long waste pile needs to be twisted five times and lifted five times, and its construction efficiency is low; secondly , when twisting the waste pile, the pile body produces a large reaction force on the pile clearer through the full casing. In order to prevent the pile clearer from rotating under the reaction force, a reaction support must be assembled to connect the pile clearer to Large-scale crawler cranes are connected, and large-scale cranes with heavy weight must be used, resulting in a large number of supporting machinery, expensive shift fees, and poor economy; thirdly, the pile cleaner drills the full casing into the soil at a slow speed and low efficiency. Moreover, it will be more difficult to drill when encountering hard soil layer or waste pile diameter expansion, which further reduces the construction efficiency.

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