UTV Steering Rack Support Assembly for Off-Road Load Reinforcement
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Solution Overview
Problem
Stock steering assemblies in off-road vehicles are insufficiently strong to withstand rugged terrain and rigorous driving, leading to premature failure.
Innovation Solution
A steering rack support assembly featuring a support shaft with mounting members affixed to the vehicle frame and a sleeve with a bracket that couples to the rack and pinion assembly, tie rods, providing additional strength and durability by redirecting forces through reinforced components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a stock rack and pinion steering assembly is used, then the vehicle can be manufactured with standard components, but the steering assembly lacks sufficient strength to withstand rugged terrain and rigorous driving
Solution Approach 1:
The steering assembly is divided into separate functional components: a support shaft assembly that provides structural support and mounting, and a rack and pinion assembly that provides steering function. This segmentation allows each component to be optimized independently - the support shaft can be designed for maximum strength while the rack and pinion can be designed for precise steering control.
Solution Approach 2:
The support shaft acts as an intermediary component between the vehicle frame and the rack and pinion assembly. It transfers and distributes loads from the steering system to the vehicle frame, preventing direct stress concentration on the rack and pinion mounting points. The support shaft effectively mediates the force transmission path to protect the steering assembly from premature failure.
2Ease of manufacture
If the support shaft cross section is made uniform along its length, then manufacturing is simplified, but structural optimization for varying stress conditions is reduced
Solution Approach 1:
The support shaft cross-sectional dimensions are carefully selected and maintained at optimal values throughout its length. While the cross section remains substantially uniform for manufacturing simplicity, the specific dimensional parameters are chosen to provide adequate strength and stiffness for the intended load conditions, representing an optimization within the constraint of uniform geometry.
3Reliability
If mounting members are affixed to the support shaft ends, then the steering assembly can be securely coupled to the vehicle frame, but the assembly complexity increases
Solution Approach 1:
The mounting members are integrated directly into the support shaft assembly, with first and second mounting members affixed to the respective ends of the support shaft. This merging of the mounting function into the support shaft structure eliminates the need for separate mounting brackets or additional fastening components, reducing overall assembly complexity while maintaining secure coupling to the vehicle frame.
Data Source
AI summary
A steering rack support assembly with a support shaft and a sleeve. The support shaft has a first end, a second end, and at least two mounting members. The cross section of the support shaft may be substantially the same along the length of the support shaft. A first of the at least two mounting members may be affixed to the first end of the support shaft, while a second of the at least two mounting members may be affixed to the second end. Each of the at least two mounting members may be configured to couple to the frame of the vehicle. The sleeve is disposed around an outer surface of the support shaft and is slidably coupled to the support shaft. A bracket affixed to the sleeve may be configured to couple to a rack and pinion assembly, a first tie rod, and a second tie rod.