Screw Anchor Pile With Excavation Bit For Tip Support

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Solution Overview

Problem

Existing screw pile technologies face challenges in efficiently digging the ground and securing a tip support force, leading to increased time and material requirements for construction projects.

Innovation Solution

A screw pile design featuring a bar-shaped body with a pile hole, a spirally formed screw, grouting holes, and a tip expanding-reinforcing plate with an air discharge hole, which allows for simultaneous ground digging and pile embedding, enhancing tip support force and reducing the number of piles needed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If two projections are directly combined with a rod to improve digging workability, then digging workability is improved, but the screw comes in direct contact with hard portions of the ground causing the screw to be broken

Engineering Contradiction:
Improvedigging workabilityVSAvoidscrew durability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent introduces an excavation bit as an intermediary component that contacts the ground first during digging, protecting the screw from direct contact with hard ground portions. The excavation bit is positioned at the tip of the screw pile to perform the initial ground breaking, while the screw follows behind without bearing the full impact of hard ground contact.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If existing digging methods are used to form pile holes, then pile holes can be formed, but tip support force cannot be secured requiring greater amount of piles

Engineering Contradiction:
Improvepile hole formation efficiencyVSAvoidtip support force
Core Design Contradiction:
ProductivityVSForce

Solution Approach 1:

The patent merges the pile hole formation function and the tip support force provision into a single integrated screw pile structure. The screw pile simultaneously performs ground digging through its spiral geometry and provides tip support force through its embedded tip in the ground, eliminating the need for separate operations and reducing the number of piles required.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of manufacture

If screw piles are used to dig the ground, then ground digging can be performed, but large differences in time and workability occur according to screw pile shapes

Engineering Contradiction:
Improveground digging capabilityVSAvoiddigging time variation
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The patent optimizes the geometric parameters of the screw pile, including the spiral angle, pitch, and cross-sectional shape, to achieve consistent digging performance across different ground conditions. By carefully selecting and standardizing these parameters, the patent reduces the variability in digging time and workability that occurs with different screw pile configurations.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS9631336B2Screw anchor pile for earth reinforcement and manufacturing method for the same
Publication Date: 2017.04.25 EXT
  • US9631336B2 patent drawing
  • US9631336B2 patent drawing
  • US9631336B2 patent drawing

AI summary

The present invention relates to a screw pile for reinforcing the ground, and in particular, a pile for reinforcing the ground which can dig the ground. The screw pile includes: a bar-shaped body with a pile hole that is a passage of air and grouting solution; a screw that is formed spirally and integrally around the body; one or more grouting holes formed around the body so that grouting solution can be sprayed; a tip expanding-reinforcing plate that has a plate shape, is coupled to one end of the body on its top, and has an air discharge hole formed through the top and the bottom in the same line as the pile hole; and a excavation bit that has one end coupled to a side of the bottom of the tip expanding-reinforcing plate and the other end with a blade, in which when the bit 500 and the screw form a hole in the ground by rotation, the tip expanding-reinforcing plate moves to the bottom of the hole and performs grounding, increasing a tip support force.