Pile foundation digging machine for building foundation engineering

Abstract

The invention relates to a pile foundation digging machine for building foundation engineering. The pile foundation digging machine for building foundation engineering comprises a drill stand, a powerhead, two hydraulic vertical lifting frames, a winch, a telescopic drill pipe and a drill bit mechanism. The drill stand comprises an upper bracket ring, a lower bracket ring and diagonal struts. Thepower head, the hydraulic vertical lifting frames and the winch are arranged on the lower bracket ring, the two hydraulic vertical lifting frames are used for supporting and lifting the drill bit mechanism for the convenience of replacing the drill bit mechanism, the power head is arranged between the two hydraulic vertical lifting frames for driving a telescopic pull rod to rotate, the upper bracket ring is connected to the top ends of the hydraulic vertical lifting frames through the diagonal struts, the winch is arranged at one end of the lower bracket ring, the upper bracket ring is connected to the telescopic pull rod through a steel wire rope, and the telescopic pull rod is connected to the drill bit mechanism. The pile foundation digging machine is simple and light and convenient,low in manufacturing cost, suitable for various different pile driving environments and bore diameters, strong in chambering ability and high in drilling stability, and can lower the labor cost, avoidpotential safety hazards of a manual hole digging pile and improve the construction efficiency and the chambering efficiency greatly.

Description

technical field [0001] The invention relates to the field of building pile foundation engineering, in particular to a pile foundation hole digging machine used for building foundation engineering. Background technique [0002] With the development of my country's modernization construction, there are more and more high-rise and super high-rise buildings in engineering construction. Due to the huge load from the upper part of the foundation construction of high-rise buildings, the general foundation is difficult to bear and special treatment must be carried out to achieve the design. To meet the requirements of foundation bearing capacity and settlement, the implementation of reaming construction on pile foundation can greatly improve the bearing capacity of single pile and save engineering cost. [0003] The construction of cast-in-situ piles is divided into two parts: hole-forming and pile-forming. Hole-forming is the first link in the construction of cast-in-place piles. Th...

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Problems solved by technology

[0003] The construction of cast-in-situ piles is divided into two parts: hole-forming and pile-forming. Hole-forming is the first link in the construction of cast-in-place piles. The rotary excavators in conventional bored piles use mud wall protection, and the diameter is 0.8m-1.5m. The pile foundation construction is more effective, but for the large-aperture construction of 1.5m or even more than 2.5m, the existing large-aperture rotary excavator is expensive, and most of them are foreign equipment. On the one hand, the whole machine is heavy and the cost of digging is high. At the same time, a special crane is required to be used together, which increases the cost and difficulty of operation, and it is not suitable for construction in places with many urban buildings; Swinging and big vibration of the drill bit can easily cause deflection of the pile hole and damage to the drill bit system, resulting in failure of construction; manual digging is often used for large-aperture construction, and the construction progress of manual digging piles is slow. The working environment is harsh, the labor intensity is high, the efficiency of digging holes is low, and there are many safety hazards, such as water seepage at the bottom of the hole, methane, landslides, etc., will cause life danger to the construction workers

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