Rotary pump perforating piling machine

Abstract

The invention provides a rotary pump perforating piling machine which is characterized by comprising a rack, a drill rod is arranged on the rack, a diamond soil suction perforating drill bit is fixedly arranged at the lower end of the drill rod and is internally provided with a power pump, a rotary drill bit is arranged below the diamond soil suction perforating drill bit and connected with the power pump, soil stirring blades evenly distributed at the circumference are arranged around the rotary drill bit, soil suction pipes are arranged at the intervals among the soil stirring blades and are connected with a one-way mud pump valve which is connected with a mud pipe and a high-pressure diamond hydraulic power soil suction pressure pump, and the mud pipe is wound on a mud pipe roll which is arranged on the rack. In the invention, a soil semi-squeezing mode is adopted, namely, soil layers are beaten and stone blocks are crushed by the drill bit, weak soil is pumped to the ground by thesoil suction pipe, broken stones are squeezed and compacted on hole walls under the driving of the soil stirring blades, and the compactness of the squeezed hole walls is improved and collapse hardlyhappens; and the small stones are squeezed towards the hole walls and soil comes from the high-pressure pipe, thus high pore-forming speed and good pore-forming quality are achieved.

Description

technical field [0001] The invention belongs to the field of construction machinery, in particular to a pile driver for foundation drilling. Background technique [0002] In the present prior art, there are six kinds of pile-forming methods of building engineering foundation pile holes, namely punching, drilling, manual digging, rotary drilling, static pressure pile driver, hammer impact machine. But each of these six methods has its disadvantages. ①The punching pile driver uses a hammer to impact the soil, breaks the soil into a slurry, and presses water from the bottom to press it out. But this method can only press the soil up, such as rocks are broken into gravel, pebbles, and coarse sand, but cannot be pulped, and the coarse sand and pebbles cannot be pressed up, because their specific gravity is heavier than mud, so it is very It is difficult to be squeezed up, thereby forming sediment in the pile hole, which is difficult to construct and affects the quality of the p...

AI Technical Summary

Problems solved by technology

But this method can only press the soil up, such as rocks are broken into gravel, pebbles, and coarse sand, but cannot be pulped, and the coarse sand and pebbles cannot be pressed up, because their specific gravity is heavier than mud, so it is very It is difficult to be squeezed up, thus forming sediment in the pile hole, which is difficult to construct and affects the quality of the pile

② When the drill bit and drill pipe for drilling into piles are connected to stir the soil, if they encounter small stones, they will not be stirred in, and the speed is slow. The mud retaining wall is the same as the punching hole, and the quality of the pile hole is difficult to guarantee

③Manual digging cannot work under the unfavorable conditions of large amount of water and ultra-deep mud flow, and the precipitation construction will have a great impact on surrounding buildings. It is unsafe to manually dig holes, and the quality of the pile holes is not reliable

When the bucket goes down, the water flows upwards, and multiple operations up and down will generate high-pressure water impacting the hole wall, which is easy to collapse the hole, and the rotary drilling rig needs to dig one bucket at a time, which is slow and the quality is difficult to guarantee.

⑤The static pressure pile machine itself is heavy, and the transportation cost is high. It will sink when encountering bad geology, and it is very difficult to remove, but the pile will squeeze the floating pile. Sometimes the quality is difficult to guarantee, and the extrusion will affect the surrounding buildings. , when passing through the hard interlayer, sand layer and pebble layer, it is not easy to pass through

⑥The hammering noise of the hammer pile machine is loud, and the residents near the buildings and the city are not environmentally friendly, and construction operations are often impossible

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