A grouting valve at the bottom of a cast-in-place pile for geotechnical engineering construction

Abstract

The invention discloses a grouting valve at the bottom of a cast-in-situ pile for geotechnical engineering construction, which comprises a main cylinder body, a first connecting sleeve, a first connecting sleeve, an auxiliary cylinder body, a second connecting sleeve, a second connecting sleeve and Adjustment assembly; the first discharge hole is provided at the lower part of the first connection cylinder; the fifth discharge hole is provided at the bottom of the second connection cylinder; the adjustment assembly includes a mounting frame, a first connection shaft, a second connection shaft, a first connecting rod, The second connecting rod, the third connecting rod, the first mounting platform, the fourth connecting rod, the fifth connecting rod, the sixth connecting rod and the second mounting platform; the second connecting rod is arranged on the first mounting platform; the first mounting The platform is arranged on the auxiliary cylinder; the fifth connecting rod is arranged on the second installation platform; the second installation platform is arranged on the main cylinder; the main cylinder and the auxiliary cylinder are respectively provided with two parallelogram mechanisms for driving rotation. A drive mechanism that moves the main cylinder and the sub cylinder toward or away from each other. In the present invention, grouting can be performed on both sides inside and outside the reinforcement cage respectively, and the grouting is more uniform and the speed is faster.

Description

technical field [0001] The invention belongs to the technical field of rock engineering, and in particular relates to a grouting valve at the bottom of a cast-in-place pile for rock engineering construction. Background technique [0002] Cast-in-situ pile refers to the pile hole formed in the foundation soil by means of mechanical drilling, steel pipe extrusion or manual excavation at the construction site, and the pile is made by placing a steel cage in it and pouring concrete, depending on the hole-forming method. , Cast-in-situ piles are divided into several categories such as immersed tube piles, bored piles and hole-dug piles. In the prior art, a grouting valve is generally used when pouring cast-in-place piles. [0003] At present, the grouting valve is generally extended to the bottom of the pile, and the grouting valve is located inside the steel cage. In this way, the concrete sprayed from the grouting valve needs to pass through the steel cage and then contact the...

AI Technical Summary

Problems solved by technology

[0003] At present, the grouting valve is generally extended to the bottom of the pile, and the grouting valve is located inside the reinforcement cage. In this way, the concrete sprayed from the grouting valve needs to pass through the reinforcement cage and then contact the soil surface, which is difficult to fully fill. on the soil side of the pile

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