Variable-Moment Eccentric Coupler for Adaptive Pile Driving
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Solution Overview
Problem
Existing piledriving systems lack the ability to dynamically vary the moment of vibratory force applied to elongate members, limiting their effectiveness in driving piles into the ground.
Innovation Solution
A coupler system with a coupler housing, drive racks, coupler gears, and pinion assemblies is integrated with an eccentric system to alter the angular relationship between upper and lower eccentric members, allowing for continuous variation of the vibratory force from minimum to maximum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed moment vibratory system is used, then the structure is simple, but the adaptability to different ground conditions is poor
Solution Approach 1:
The patent implements a variable moment system where the moment of the vibratory force can be dynamically adjusted during operation. The coupler system allows changing the angular relationship between upper and lower eccentric members, enabling the moment to vary from minimum to maximum values. This dynamic capability provides adaptability to different ground conditions while maintaining a relatively compact structure.
Solution Approach 2:
The coupler system serves multiple functions: it couples the upper and lower eccentric members, enables angular relationship adjustment, and provides moment variation capability. This multi-functionality allows a single system design to handle various ground conditions and pile driving requirements, enhancing versatility without proportionally increasing complexity.
2Productivity
If the vibratory force is kept at maximum, then the productivity is high, but the system cannot adapt to varying ground conditions
Solution Approach 1:
The system enables dynamic adjustment of the vibratory force moment during operation. By varying the angular relationship between eccentric members through the coupler system, the moment can be adjusted from minimum to maximum values, allowing optimization of productivity for different ground conditions rather than being fixed at maximum.
Solution Approach 2:
The patent changes the moment parameter of the vibratory force dynamically. The coupler system allows the moment to be varied continuously, enabling the operator to select the appropriate force level for different ground conditions while maintaining high productivity when conditions are favorable.
3Adaptability or versatility
If the moment of vibratory force is variable, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The coupler system merges the functions of coupling upper and lower eccentric members with the function of enabling moment variation. By integrating these functions into a single coupler mechanism, the patent achieves moment variability without proportionally increasing overall system complexity.
Solution Approach 2:
The coupler system performs multiple functions simultaneously: it couples the eccentric members, enables angular adjustment, and provides moment variation. This multi-functionality reduces the need for separate mechanisms, thereby limiting the increase in device complexity while achieving adaptability.
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
Enables the generation of variable vibratory forces that can be adjusted to suit different ground conditions, enhancing the efficiency of pile driving by optimizing the force application.
Implementation Method 1
The present invention relates to improved systems and methods for generating variable moment vibratory forces for driving elongate members such as construction piles into the ground
Implementation Method 2
at least one pinion assembly operatively connected between the at least one drive rack and the at least one coupler gear. Linear movement of the at least one drive rack causes rotation of the at least one coupler gear around the coupler axis
Data Source
AI summary
A coupler system for a vibratory system comprising an eccentric system comprising at least one transfer gear operatively connected to at least upper and lower eccentric members, the coupler system comprising a coupler housing defining a coupler axis, at least one drive rack supported for linear movement within the coupler housing, a coupler drive system for causing linear movement of the at least one drive rack within the coupler housing, at least one coupler gear adapted to engage the at least one transfer gear, and at least one pinion assembly operatively connected between the at least one drive rack and the at least one coupler gear. Linear movement of the at least one drive rack causes rotation of the at least one coupler gear around the coupler axis to alter an angular relationship of the upper and lower eccentric members.