Soil extraction device for building pile foundation sinking tube bottom expansion

Abstract

The invention relates to a base expanding and soil taking device of an immersed tube of a building pile, and belongs to the field of building equipment. The base expanding and soil taking device comprises a base expanding device, a rotation device, a positioning device and a control device, the base expanding device comprises a soil scraping mechanism and a driving mechanism, the rotation device comprises a cylindrical barrel and a rotation mechanism, the positioning device comprises a positioning mechanism and an outer expansion mechanism to drive the positioning mechanism to expand outwardly, and the control device comprises a controller and a sensor assembly electrically connected with the controller. Thus, base expanding can be integrated with soil taking, construction steps are simplified, work time is shortened, a soil taking manner is changed, high power consumption of vacuum soil suction is avoided, the soil taking efficiency is improved, the work cost is reduced, the base expanding and soil taking device can be positioned in a random position of a cavity by means of the positioning mechanism, a hole in any position in the cavity can be expanded, the hole expanding diversity is realized, and the utilization rate of the device is improved.

Description

technical field [0001] The invention relates to the field of construction equipment, in particular to a bottom-expanding earth-taking device for immersed tubes of construction pile foundations. Background technique [0002] Immersed tube rammed and expanded cast-in-situ piles, referred to as rammed and expanded piles. It uses a pile hammer to simultaneously sink the inner and outer pile tubes into the soil layer, and rams and expands the concrete at the end of the inner pile tube by hammering to form an enlarged head at the end of the pile, and then pours the concrete on the pile body. When pulling out the outer pile tube, use the inner pile The pipe and the pile hammer are pressed against the concrete surface inside the pipe, so that the pile body is densely packed. [0003] All buildings are supported by solid and stable foundation engineering. In order to improve the bearing capacity of single piles, the foundation engineering of prefabricated steel concrete bottom expan...

AI Technical Summary

Problems solved by technology

[0005] The problems in the above scheme are that bottom expansion and soil extraction are carried out in different steps, which increases the construction steps and prolongs the working time, and the bottom expansion cannot be realized simply from the above scheme. The above scheme uses a vacuum device to suck out the soil, and its soil absorption efficiency Lower, deeper cavity, higher power required, increased operating cost

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