I-beam Axle Suspension With Segmented T-section Beams

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Solution Overview

Problem

Existing axle suspension systems require beams to be placed over a free end of the axle and slid longitudinally, which can be cumbersome and inefficient, especially when trying to achieve a secure fit around the axle's cross-sectional shape.

Innovation Solution

The axle bearing suspension system uses I-beam sections with T-shaped cross sections that fit together to form an I-beam configuration, with attachment portions corresponding to the axle's shape, allowing for secure affixation around the axle's upper and lower halves, and includes pneumatic bellows and hanger brackets for connection to the vehicle frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If beams are placed over a free end of the axle and slid longitudinally to the appropriate location, then the beams can be installed on the axle, but the installation process becomes cumbersome and inefficient

Engineering Contradiction:
Improveease of installationVSAvoidinstallation time
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The beam is divided into an upper section and a lower section that can be installed separately on the axle. Each section has its own attachment portion that fits around the axle, allowing independent installation rather than requiring the entire beam to be slid over the axle end.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of installing the beam in a longitudinal direction by sliding it over the axle end, the attachment portions are designed to fit around the axle in a radial/circumferential direction. This dimensional change from longitudinal insertion to radial attachment simplifies the installation process.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Strength

If the beams are designed with attachment portions that fit around the axle, then the structural integrity is enhanced, but the device complexity increases

Engineering Contradiction:
Improvestructural integrityVSAvoidbeam structure complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The beam structure is segmented into upper and lower sections, each with simplified attachment portions. While this adds a division in the structure, each segment remains relatively simple in design, and the segmentation actually reduces overall complexity by allowing modular manufacturing and assembly.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS8998229B2I-beam axle suspension system
Publication Date: 2015.04.07 DEXTER AXLE CO LLC
  • US8998229B2 patent drawing
  • US8998229B2 patent drawing
  • US8998229B2 patent drawing

AI summary

An axle bearing suspension system and method has a pair of elongated beams having an upper section and lower section with T-shaped cross sections. The T-shaped cross sections are welded together to form beams having an I-beam cross section. The beams have attachment portions which are preferably arc shaped cylindrical portions for fixing the beams to the axle with the upper section being welded to an upper part of the axle and the lower section being welded to a lower part of the axle.