Adjustable Lift Bar System for Roll-Off Containers
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Solution Overview
Problem
The waste management industry faces inefficiencies due to incompatible roll-off container and truck systems, requiring specific, non-adjustable lifting mechanisms that lead to high costs and operational inefficiencies when handling containers of varying sizes.
Innovation Solution
The Adjustable Lift Bar System allows for easy adjustment of lift bar systems to accommodate different truck and container heights without the need for re-welding, using a modular design with removable fasteners and spreader tubes to secure the lift bar assembly to the container, enabling compatibility with various truck sizes and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a non-adjustable lifting mechanism is used, then the structure is simple and manufacturing is easy, but the system cannot accommodate various truck and container sizes
Solution Approach 1:
The lift bar system is divided into modular components including adjustable lift bars, mounting flanges with apertures, and bolt plates that can be independently positioned and secured. This segmentation allows the system to be configured for different heights and container sizes by selectively assembling components at different positions, resolving the contradiction between versatility and structural simplicity.
Solution Approach 2:
The lift bar system incorporates adjustable and repositionable components that can be dynamically configured for different operating conditions. The mounting flanges can be positioned at different locations on the container, and the lift bars can be adjusted to various heights, enabling the same basic structure to adapt to multiple truck and container configurations without requiring complete redesign.
2Adaptability or versatility
If custom fabrication is performed for each truck and container size, then the fit and function are optimized, but the cost and time required increase significantly
Solution Approach 1:
The lift bar system is designed as a universal assembly that can serve multiple functions and accommodate various truck and container configurations through a standardized set of components. The mounting flanges with apertures and bolt plates provide a universal interface that works across different container types, eliminating the need for custom fabrication for each application while maintaining optimized fit and function through selective component positioning.
3Reliability
If weldments are used to secure the lift bar system, then the connection is strong and reliable, but adjustments require costly re-welding operations
Solution Approach 1:
The system extracts the adjustment capability from the welding process by using removable fastening mechanisms. Instead of permanently welding components in fixed positions, the design incorporates mounting flanges with apertures and bolt plates that can be securely attached through fastening means and then easily removed or repositioned. This maintains connection strength through robust fastening while enabling adjustment without requiring re-welding operations.
Data Source
AI summary
An Adjustable Lift Bar System for roll off containers and other applications used to enable a roll off to be compatible with a lift bar hoist system set at various heights; the system includes a lift bar having a crown; a pair of lift bar flanges and mounting flanges with a set of holes to receive removable fasteners and mounting flanges; a long spreader tube between the mounting flanges; a pair of short spreader tubes, bolt plates with a series of holes, the pair of vertical supports, and fasteners to adjustably secure the pair of the mounting flanges of the lift bar assembly to the pair of the bolt plates.