Pivoting Stake Removal Tool for Low-Effort Extraction
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Solution Overview
Problem
Existing stake removal tools require significant physical effort and are inefficient for removing in-ground stakes, prolonging construction time and exhausting workers.
Innovation Solution
A stake removal tool with an elongated member, carriage, and lift system, featuring a pivoting member with engagement members that grasp the stake, and a resilient member to facilitate easy extraction by pivoting and lifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual stake removal tools are used, then the tool structure can be simple, but significant physical effort is required and removal efficiency is low
Solution Approach 1:
The tool employs a dynamic lever arm mechanism where the carriage can pivot along the elongated member, transforming the removal action from static pulling to dynamic lever-based extraction. This allows the tool to adapt its mechanical advantage based on stake depth and resistance, improving removal efficiency without proportionally increasing structural complexity
Solution Approach 2:
The invention introduces a vertical dimension to stake removal by driving the carriage downward along the elongated member to engage the stake, then utilizing upward motion combined with pivoting action. This multi-dimensional approach (vertical engagement + horizontal pivoting) enables more effective stake extraction compared to traditional single-dimension pulling tools
2Stability of the object's composition
If stakes are driven deep into the ground for stability, then stake stability is improved, but removal becomes more challenging and time-consuming
Solution Approach 1:
The dynamic lever arm mechanism allows the tool to generate increasing extraction force as the carriage pivots upward, enabling effective removal of deeply embedded stakes. The system adapts its mechanical advantage throughout the removal process, reducing the time required compared to static tools that must overcome maximum resistance from the start
Solution Approach 2:
The tool engages the stake by driving the carriage downward along the elongated member before initiating the upward pivoting extraction. This preliminary engagement ensures proper positioning and grip on the stake, allowing the subsequent lever action to be more effective and faster, thereby reducing overall removal time for deeply embedded stakes
3Stability of the object's composition
If more stakes are used in construction projects, then project stability and support are improved, but physical exhaustion of workers increases
Solution Approach 1:
The dynamic lever arm mechanism significantly reduces the physical force required per stake by utilizing leverage and pivoting motion. This makes the removal process less physically exhausting, allowing workers to handle larger numbers of stakes without proportional increases in fatigue, thereby supporting projects that require extensive stake usage
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces physical effort and enhances efficiency in removing in-ground stakes, minimizing worker fatigue and construction time.
Implementation Method 1
a resilient member adapted to dampen a displacement of the carriage at the distal end of the elongated member
Implementation Method 2
a lift system configured to drive the carriage along a longitudinal direction of the elongated member
Implementation Method 3
a pivoting member configured to pivot about the fulcrum and defining first and second engagement members, the engagement members being configured to engage the stake and grasp the stake when the pivoting member is pivoted
Data Source
AI summary
A stake removal tool configured for removing in-ground stakes, the stake removal tool comprising an elongated member defining a proximal end and a distal end, a carriage, and a lift system configured to drive the carriage along a longitudinal direction of the elongated member. The carriage comprises a chassis and a pivoting member configured to pivot about a fulcrum and defining first and second engagement members. As the lift system engages the carriage to displace it downwardly in a longitudinal direction of the elongate member, the first and second pivot members may be forced to pivot thereby engaging and dislodging a stake.