Adjustable Strap Gusset System for Cargo Liner Bulging

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Solution Overview

Problem

Conventional bulk material cargo container liners face structural and operational drawbacks, including insufficient tension in strapping systems, leading to rearward bulging and safety hazards due to loose reinforcing bars, which are not easily adjustable or safe for operators during discharge.

Innovation Solution

A new bulk material cargo container liner with a crisscrossing strapping system featuring independently adjustable horizontally and vertically oriented straps, and a U-shaped gusset system to provide substantial restraint forces, preventing outward bulging and enhancing safety by allowing for customizable tension levels and secure attachment to the container's internal supports.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If conventional strapping systems are used to reinforce the rear wall member, then structural reinforcement is provided, but insufficient tension leads to rearward bulging and safety hazards

Engineering Contradiction:
Improvestructural reinforcementVSAvoidtension sufficiency
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The strapping system incorporates adjustable tension mechanisms that allow dynamic adjustment of strap tension to accommodate varying cargo loads and hydrostatic pressures. The straps can be tightened independently to achieve optimal tension distribution, preventing rearward bulging while maintaining structural reinforcement.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system enables change in tension parameters by allowing independent adjustment of each strap's tension level. This parameter adjustment capability ensures that sufficient tension is applied to prevent bulging under different operating conditions, resolving the contradiction between providing structural reinforcement and maintaining adequate tension.

Inventive Principle:
Principle #35Parameter changes

2Strength

If rigid reinforcing bars are used to prevent bulging, then structural integrity is improved, but safety hazards arise during discharge due to loose bars

Engineering Contradiction:
Improvestructural integrityVSAvoidsafety hazards
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent replaces rigid reinforcing bars with flexible straps that can adapt to the container's internal geometry and cargo conditions. These flexible straps maintain structural integrity by distributing forces evenly while eliminating the safety hazards associated with loose rigid bars during discharge operations.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The flexible strap system allows dynamic adjustment and reconfiguration during loading and discharge operations, enabling operators to secure the straps properly without creating safety hazards. The flexibility of the straps eliminates the risk of loose rigid bars while maintaining the necessary structural support.

Inventive Principle:
Principle #15Dynamics

3Strength

If conventional strapping systems are used, then reinforcement is provided, but the system is not easily adjustable or customizable

Engineering Contradiction:
ImprovereinforcementVSAvoidadjustability
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The strapping system is divided into multiple independent straps that can be adjusted separately. This segmentation allows each strap to be customized for specific locations and tension requirements, providing both reinforcement and adjustability. The independent straps can be configured to address different structural needs within the container.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system incorporates adjustable mechanisms that enable dynamic reconfiguration of the strapping system. Operators can adjust the tension, position, and configuration of individual straps to match specific cargo types and container conditions, achieving both reinforcement and adaptability.

Inventive Principle:
Principle #15Dynamics

4Strength

If the rear end wall member is made stronger to resist hydrostatic head, then bulging is reduced, but device complexity increases

Engineering Contradiction:
Improveresistance to hydrostatic headVSAvoidstructural complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

Instead of making the entire rear end wall member stronger, the patent segments the reinforcement into multiple independent straps applied at specific locations. This approach provides the necessary resistance to hydrostatic head while avoiding the complexity of a completely redesigned wall structure. The segmented strap system is simpler to install and adjust than a monolithic strengthening solution.

Inventive Principle:
Principle #1Segmentation

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

The solution effectively prevents rearward bulging of the rear end wall and enhances safety by allowing for independent tension adjustment of straps and secure attachment, ensuring the container's structural integrity and operator safety during cargo discharge.

Implementation Method 1

the substantially large hydrostatic head that may be impressed upon the rear end wall member of the bulk material cargo container liner by means of the bulk cargo material

Methodology Applied
Scientific EffectHydrostatic pressure: Pressure Increase

Implementation Method 2

A plurality of horizontally spaced, vertically oriented reinforcing or restraining straps and a plurality of vertically spaced, horizontally oriented reinforcing or restraining straps are disposed upon an external surface portion of the rear end wall member... crisscrossing each other in a checkerboard, grid-type, or matrix-type arrangement

Methodology Applied
Scientific EffectTension: Tension

Implementation Method 3

a substantially U-shaped reinforcing or restraining gusset system which is fixedly secured to interior portions of the bulk material cargo container liner... effectively fix and restrain the rear wall member or bulkhead structure

Methodology Applied
Scientific EffectStructural support: Mechanical Force

Data Source

PatentUS9193523B2Reinforcing or restraining strap or gusset system for rear wall member of bulk material cargo container liner
Publication Date: 2015.11.24 SIGNODE IND GROUP LLC
  • US9193523B2 patent drawing
  • US9193523B2 patent drawing
  • US9193523B2 patent drawing

AI summary

An external reinforcing strap system for a bulk material cargo container liner comprises a plurality of vertically spaced, horizontally oriented reinforcing straps, or a plurality of horizontally spaced, vertically oriented reinforcing straps and a plurality of vertically spaced, horizontally oriented reinforcing straps, to have their tension levels individually adjusted in an independent manner in order to provide selected sections of the external reinforcing strapping system with requisites amount of tension. In addition, a substantially U-shaped reinforcing gusset system is also disclosed which provides the necessary reinforcement for the rear wall member of the bulk material cargo container liner but with a simplified structure effectively eliminating the aforenoted strapping system.