Drive Tool Alignment Window for Helical Pile Connection
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Solution Overview
Problem
Conventional helical pile and drive tool alignment and connection processes are difficult and unsafe, often resulting in pinch points that can injure installers, and require additional assistance due to the planar nature of the tool ends.
Innovation Solution
The design of a drive tool and extension member with an axially extending portion having a circumferential extent less than the main portion, creating a laterally and axially open alignment window to facilitate quick and safe alignment and connection of the helical pile, eliminating pinch points and simplifying the insertion process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the drive tool end is made substantially planar for structural simplicity, then manufacturing is easier, but alignment difficulty increases and safety decreases due to pinch points
Solution Approach 1:
The drive tool end is segmented into multiple portions: a first portion with greater circumferential extent and a second portion with lesser circumferential extent that extends axially beyond the first portion. This segmentation creates distinct functional zones - the larger first portion provides structural support while the smaller second portion creates the alignment window, resolving the contradiction between manufacturing simplicity and alignment ease.
Solution Approach 2:
The drive tool end transitions from a symmetric planar design to an asymmetric multi-portion design where the second portion has different dimensions than the first portion. This asymmetry creates the laterally and axially open alignment window that facilitates easy alignment while maintaining structural integrity through the larger first portion.
2Ease of manufacture
If the drive tool end is made substantially planar for structural simplicity, then manufacturing is easier, but safety decreases due to pinch points between tool and pile
Solution Approach 1:
By segmenting the drive tool end into first and second portions with different circumferential extents, the invention eliminates the continuous planar surface that creates pinch points. The gap created by the smaller second portion extending axially beyond the first portion provides a safety zone that prevents finger pinching during operation.
Solution Approach 2:
The second portion of the drive tool end acts as an intermediary element between the installer's fingers and the helical pile. This portion with lesser circumferential extent creates a physical barrier and alignment window that mediates the interaction, preventing direct contact between fingers and the pile during the connection process.
3Manufacturing precision
If additional assistance is provided during alignment to ensure precision, then alignment precision improves, but operation complexity and time increase
Solution Approach 1:
The drive tool's second portion with lesser circumferential extent enables self-alignment between the drive tool and helical pile. The alignment window naturally guides the components into proper alignment without requiring additional assistance or complex alignment procedures, allowing a single installer to perform the connection independently.
Solution Approach 2:
The smaller second portion of the drive tool end performs the preliminary alignment action before the main connection occurs. By creating the alignment window in advance, the tool prepares the connection interface, making the subsequent fastening operation straightforward and eliminating the need for complex real-time alignment adjustments.
Data Source
AI summary
A drive tool for connecting a member to the drive tool of a drive tool assembly includes a flange connectable to the drive tool assembly. A wall has a first portion extending axially outwardly from the flange and defining a socket for receiving a first member. The wall has a second portion extending axially from the first portion of the wall and having a circumferential extent less than that of the first portion to facilitate receiving the first member by providing a laterally and axially open alignment opening. The first member can have a second portion extending axially further than a first portion and having a circumferential extent less than the first portion to facilitate connecting a second member to the first member by providing a laterally and axially open alignment opening.