Lift Axle Mounting Brackets for Alignment and Spring Service
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lift axle systems for heavy-duty trucks face challenges in aligning the axle relative to the vehicle frame during installation and in easily replacing or servicing load springs without detaching the rear frame bracket from the frame member.
Innovation Solution
The use of brackets with graduated steps for lateral alignment and two-piece rear brackets that allow the base portion to be disconnected from the upstanding portion, enabling load spring removal and replacement without detaching the frame bracket from the frame member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional solid brackets are used to attach the lift axle system to the frame, then structural strength is ensured, but alignment adjustment and load spring servicing become complex and time-consuming
Solution Approach 1:
The bracket is divided into multiple segments along its length, with each segment capable of independent lateral movement relative to adjacent segments. This segmentation allows the bracket to be adjusted laterally in discrete increments while maintaining overall structural integrity through the interconnected segments.
Solution Approach 2:
The bracket transitions from a fixed, rigid structure to a dynamic, adjustable structure. The segments can move laterally relative to each other, enabling the bracket to adapt its position for proper alignment of the lift axle system with the frame, while still providing the necessary structural support.
2Ease of repair
If the rear frame bracket is made as a single integrated piece, then structural integrity is maintained, but load spring replacement requires detaching the entire bracket from the frame member
Solution Approach 1:
The rear frame bracket is segmented into a first portion that attaches to the frame member and a second portion that supports the load spring. This segmentation allows the second portion to be detached and reattached independently, enabling load spring replacement without removing the entire bracket from the frame member, while the first portion maintains the structural connection to the frame.
3Adaptability or versatility
If multiple separate brackets are used for alignment adjustment, then positioning flexibility is improved, but the number of components and installation complexity increases
Solution Approach 1:
The bracket is designed to perform multiple functions: it provides structural support, enables lateral alignment adjustment through segment movement, and allows independent load spring servicing. This multi-functionality is achieved within a single integrated bracket structure rather than requiring multiple separate components.
Solution Approach 2:
The bracket combines the functions of alignment adjustment and structural support into a single component. The segments are integrated within the same bracket structure, merging what could have been separate adjustment mechanisms and support elements into one unified component that reduces overall system complexity.
Data Source
AI summary
Brackets for mounting auxiliary suspension systems, such as lift axle systems, to vehicles are disclosed herein. For example, brackets are disclosed for attaching lift axle hanger brackets and lift axle load springs to corresponding frame members. In some embodiments, the frame brackets can include physical features (e.g., a series of graduated steps in an edge portion thereof) to facilitate visual alignment of the lift axle with the vehicle frame members during installation. In other embodiments, the frame brackets can be two-piece brackets that enable the load springs to be removed and replaced without having to detach the frame bracket from the frame rail.