Hydraulic post-extractor apparatus

Abstract

The invention provides a hydraulic pile pulling device, which comprises an anchor bed component, an oil cylinder, a bottom cone, an upper guard plate and a lower guard plate. The anchor bed component comprises a top cover plate, a wedge and an anchor bed. The oil cylinder and the bottom of the anchor bed are in spherical hinge connection through a double-lug ring; the bottom cone is also in spherical hinge connection with the other end of the oil cylinder through the double-lug ring; the structure of the upper guard plate mainly comprises an upper guard plate shell, and upper guard plate connecting angle iron; the angle iron is connected with the bottom of the anchor bed through screws; the structure of the lower guard plate adopts a sheet metal part; the outer wall of the lower guard plate is connected by bolts; and the lower guard plate is connected with the upper surface of the bottom cone through the screws. The hydraulic pile pulling device takes a pile body as guidance, and the oil cylinder repeatedly expands and contracts to push the bottom cone downwards to expel soil masses around the pile outwards, so as to eliminate friction force around the pile. When the bottom cone descends to the bottom of the pile, the pile pulling device is pulled up together with the pile body. The pile pulling device can be used for pulling out concrete piles, solves the difficulty that the pile is large in friction force at the periphery and difficult to pull out integrally in a process of pulling piles, and has the characteristics of high efficiency and no pollution.

Description

technical field [0001] The invention belongs to the technical field of construction machinery pile machinery, and in particular relates to a pile puller device suitable for pulling out concrete piles. Background technique [0002] In the process of urbanization, there are more and more high-rise residential buildings. However, due to the limited land resources in the city, it is often necessary to remove old buildings and pull out existing underground engineering piles such as concrete piles when urban reconstruction is now or in the future. The basic principle of the current pile pulling technology and special equipment is to destroy the geological extrusion force on the pile around the pile foundation, loosen the soil around the pile, reduce the friction force of the soil on the pile, and then use the corresponding lifting machinery to remove the pile. Hanging. The main methods are: 1) vibrating pile sinking and pulling machine. The vibrating pile pulling machine is a p...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hydraulic pile extractor device suitable for concrete piles, through new structural design and innovation to solve the problems of low efficiency, poor effect, mud pollution and other problems in the past cast-in-place pile removal, to achieve simple, efficient, Pollution-free pile pulling construction

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