Spring-Counter-Balanced Ramp Wall for Landscaping Containers
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Solution Overview
Problem
Existing containers for transporting and storing landscaping materials face challenges in manually operating massive ramp walls between closed and loading positions without compromising structural integrity or affecting loading/unloading operations, particularly in reducing moving parts, manufacturing costs, and maintenance expenses.
Innovation Solution
A counter-balancing torsion spring arrangement is used, with helical torsion springs mounted concentrically on collinearly arranged pivot shafts, providing a torque force equal to the ramp wall's weight to enable manual operation between vertical closed and downwardly inclined loading positions, and a locking mechanism to secure the ramp wall in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hydraulic motor arrangement is used to operate the ramp wall, then the ramp wall can be moved between closed and loading positions, but the device complexity, manufacturing costs, and maintenance expenses increase
Solution Approach 1:
The patent removes the hydraulic motor arrangement from the system and replaces it with a simpler spring-based counterbalancing mechanism. This extraction of the complex hydraulic system directly reduces device complexity, manufacturing costs, and maintenance requirements while preserving the essential function of moving the ramp wall between positions
Solution Approach 2:
The spring arrangement provides self-service by automatically counterbalancing the ramp wall's weight through elastic potential energy storage. The springs are pre-loaded to provide the necessary force to hold the ramp wall in position and assist its movement, eliminating the need for external hydraulic power sources and complex control systems
2Strength
If the ramp wall is made massive for structural integrity, then strength is improved, but ease of manual operation deteriorates
Solution Approach 1:
The patent applies counterweight principle by using spring arrangements that generate upward counterbalancing forces equal to or slightly greater than the ramp wall's weight. These springs are mounted to the container body and engage with the ramp wall to provide continuous counterbalancing during its movement, allowing a single operator to manually move the massive structure with minimal effort
Solution Approach 2:
The patent replaces the need for complex mechanical lifting systems with a simpler spring-based elastic mechanism. The springs store and release mechanical energy to counterbalance the ramp wall's gravitational force, substituting a heavy mechanical system with a lighter, more efficient elastic system that maintains structural integrity while enabling easy operation
3Ease of operation
If spring counter-balancing arrangements are added to enable manual operation, then ease of operation is improved, but device complexity and structural integrity may be affected
Solution Approach 1:
The patent applies local quality by strategically positioning the spring arrangements at specific locations on the container structure where they can effectively counterbalance the ramp wall without compromising overall structural integrity. The springs are mounted locally to engage with the ramp wall at optimal points, distributing forces appropriately and minimizing impact on the container's structural strength
Solution Approach 2:
The spring arrangements act as intermediaries between the container structure and the ramp wall, transferring and balancing forces without creating direct stress concentrations that could compromise structural integrity. The springs mediate the interaction between the massive ramp wall and the container body, allowing manual operation while protecting the structural framework from excessive loads
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
This solution allows a single operator to easily pivot the massive ramp wall manually, reducing costs and maintenance while maintaining structural integrity and simplifying operations, ensuring efficient loading and unloading without interfering with the container's structural integrity.
Implementation Method 1
a counter-balancing spring arrangement that biases the ramp wall from the downwardly inclined loading position upwardly toward the vertical closed position with a torque force that is generally equal to the gravitational torque force generated by the weight of the ramp wall
Implementation Method 2
a torque force that is generally equal to the gravitational torque force generated by the weight of the ramp wall
Data Source
AI summary
A container for transporting and storing landscaping materials includes a rectangular container body having a bottom wall, a pair of side walls, and an end wall which define an open-ended chamber; and a vertical ramp end wall that is pivotally displaceable between a normal vertical closed position, and a downwardly inclined loading position, which pivot arrangement includes a pair of horizontal pivot shafts arranged collinearly transversely of the container on opposite sides of the protruding ends of a pair of guide rails that extend longitudinally beneath the bottom wall. To afford manual operation of the massive ramp wall, a counter-balancing spring arrangement is provided including a pair of torsion springs mounted concentrically on these two pivot shafts for biasing the ramp wall from the loading position upwardly toward the closed position with an aggregate torque force that is generally equal to the weight of the ramp wall.