Simple manual spiral earth fetching device for reinforcing pile core of pre-stressed pipe pile

Abstract

The invention discloses a simple manual spiral earth fetching device for reinforcing a pile core of a pre-stressed pipe pile, which can solve the problem that gravel, brick blocks, hard rock and soil and other various sundries are mingled in the pile core of the pre-stressed pipe pile. The earth fetching device comprises a drilling rod, a force-adding rod and a lifting mechanism, wherein the lifting mechanism is connected with the upper end of the drilling rod, spiral earth rolling blades are arranged on the side surface at the lower end of the drilling rod, a plurality of plug holes are arranged on the side surface of the drilling rod, and the force-adding rod is in plug-in connection with the plug holes. The spiral earth rolling blades are provided with a cavity with an upward opening as a whole. A spiral drill tip is arranged at the lower end of the drilling rod. The lifting mechanism comprises a simple tripod and a fixed pulley component. Alloy steel rake teeth are welded at the lower ends of the spiral earth rolling blades. By adopting the simple manual spiral earth fetching device, the actual needs for fetching earth for specific small pile-diameter pipe cores can be satisfied, the simple manual spiral earth fetching device is particularly applicable to applications under dense pile heads and complex site conditions, the construction efficacy is high, the operation is high, the construction difficult problem of fetching the earth for the small pile-diameter pipe cores can be well solved, and the simple manual spiral earth fetching device is safe and convenient.

Description

Simple manual screw soil fetching device for core reinforcement of prestressed pipe piles technical field The invention relates to a tool used in the construction process of building structure foundation engineering, in particular to a simple manual screw soil fetching device for prestressed pipe pile core reinforcement. Background technique In recent years, high-strength prestressed concrete pipe piles (PHC for short) have become popular due to their good pile body forming quality, high concrete strength, high single pile bearing capacity, good impact resistance, strong penetration, cheap price, quick construction and adopt static pressure. It is widely used in the foundation engineering of multi-storey and high-rise building structures because of its small impact on the surrounding environment. However, in the construction of prestressed pipe piles, because the pile body is hollow, its shear and crack resistance are relatively poor, often due to the complexity of the sit...

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Problems solved by technology

However, during the construction process, faced with the hard, dense pile core soil containing various sundries, due to the lack of suitable excavation tools and methods, the construction task of pile foundation reinforcement treatment could not be completed even after half a year of construction.

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