Aftertreatment Mounting Bracket Assembly for Vibration-Resistant Load Sharing
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Solution Overview
Problem
Securing and distributing the load of aftertreatment systems to a vehicle chassis is challenging, leading to significant strain on fasteners and potential slipping during vibrations.
Innovation Solution
A mounting bracket assembly with an outer bracket and inner brackets, featuring multiple loading paths and angled receptacles to provide clamping pressure and stability, including a brace with a planar and curved surface angle for self-locking and vibration resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mounting brackets are used to secure aftertreatment systems, then the system can be mounted to the vehicle chassis, but significant strain on fasteners and potential slipping during vibrations occurs
Solution Approach 1:
The mounting bracket is divided into multiple segments including an outer bracket, inner brackets, and braces that can independently distribute and manage mechanical loads. This segmentation allows each component to handle specific portions of the stress, preventing concentration of force on single fasteners and reducing overall strain while maintaining secure mounting.
Solution Approach 2:
The mounting bracket incorporates flexible elements and multiple degrees of freedom that allow it to dynamically adapt to vibrations and thermal expansions. The inner brackets can move slightly relative to the outer bracket, absorbing vibrational energy and preventing rigid stress transmission to fasteners, thereby reducing fastener strain while maintaining mounting reliability.
2Reliability
If traditional mounting brackets are used to secure aftertreatment systems, then the system can be mounted to the vehicle chassis, but potential slipping during vibrations occurs
Solution Approach 1:
The mounting bracket incorporates angled braces and multi-planar support surfaces that provide stability in multiple dimensions. The braces extend at specific angles to create a three-dimensional load distribution network, preventing slipping in any direction by providing counteracting forces in multiple spatial dimensions rather than relying solely on friction in a single plane.
Solution Approach 2:
The mounting bracket design includes self-aligning features and self-locking mechanisms where the angled braces and inner bracket geometry automatically adjust to vibration-induced movements. The structure uses its own geometric configuration to prevent slipping without requiring additional active control systems or complex external components, achieving anti-slipping capability through self-service mechanisms.
3Strength
If multiple loading paths are implemented in the mounting bracket assembly, then load distribution is improved, but the device complexity increases
Solution Approach 1:
The mounting bracket is segmented into multiple load-bearing components (outer bracket, inner brackets, braces) that create parallel loading paths. Each segment is designed to carry a portion of the total load, distributing forces through multiple independent routes from the aftertreatment system to the vehicle chassis. This segmentation achieves improved load distribution while keeping each individual component relatively simple in design.
Data Source
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AI summary
A mounting bracket assembly for an aftertreatment system includes an outer bracket. The outer bracket includes a mounting plate. The outer bracket includes a first mounting post and a second mounting post located at a first location and a second location of the mounting plate, extending in a first direction and a second direction, respectively. The first direction is parallel to the second direction. The outer bracket includes a brace having a first portion extending from a surface of the mounting plate and a second portion extending from an edge of the first portion. A receptacle is defined by a planar surface of the first portion and a curved surface of the second portion. In a cross-section extending through the receptacle and the mounting plate, the planar surface and the curved surface are at an angle between 35° and 85°, inclusive, with respect to each other.