Vehicle Mount Devices for Vibration Isolation
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Solution Overview
Problem
Conventional vehicles with movable utility beds, such as dump beds, face challenges in effectively isolating the engine from vibrations and ensuring smooth operation during cargo hauling and dumping, which can affect the riding experience and structural integrity.
Innovation Solution
The implementation of a vehicular frame with a sub-frame and mount devices comprising a casing, core member, and elastomeric member, where the core member is positioned within the casing's interior cavity and can move relative to it in three orthogonal directions, providing vibration attenuation and secure attachment to the main frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the engine is rigidly attached to the main frame, then structural stability is improved, but vibration transmission to the engine increases
Solution Approach 1:
The patent introduces mount devices as intermediary elements between the engine and the main frame. These mount devices include elastomeric members that act as vibration-isolating mediators, allowing the engine to be securely attached while preventing harmful vibration transmission to the main frame and utility bed.
Solution Approach 2:
The patent changes the mechanical parameters of the connection system by using elastomeric members with specific durometer values (e.g., 30-50 Shore A) and geometric configurations. These parameter changes enable the mount devices to deform under vibration loads, absorbing energy while maintaining structural support for the engine.
2Adaptability or versatility
If the utility bed is made movable for dumping cargo, then cargo handling capability is improved, but engine vibration isolation becomes more difficult
Solution Approach 1:
The patent segments the vehicle frame into a main frame and a sub-frame, with the utility bed attached to the sub-frame. This segmentation allows the mount devices to be positioned between the sub-frame and main frame, creating an additional vibration isolation stage that protects both the engine and the movable utility bed from each other's vibrations.
Solution Approach 2:
The mount devices serve as intermediary elements that decouple the vibration sources from the movable utility bed. The elastomeric members in the mount devices absorb and dampen vibrations before they can be transmitted to the utility bed, enabling smooth cargo handling and dumping operations even when the bed is in motion.
3Object-affected harmful factors
If mount devices allow core member movement in three directions, then vibration absorption is improved, but attachment stability may be compromised
Solution Approach 1:
The patent carefully controls the geometric parameters of the mount devices, including the core member dimensions, elastomeric member properties, and casing structure. These parameter optimizations allow the core member to move freely in three orthogonal directions for vibration absorption while preventing excessive movement that would compromise attachment stability.
Solution Approach 2:
The mount devices use composite construction with rigid components (casing, core member) and flexible components (elastomeric members). This composite approach enables the device to provide both stable attachment points and controlled movement capability, resolving the contradiction between vibration absorption and attachment stability.
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
This configuration enhances the vehicle's ability to absorb vibrations, improving the riding experience and maintaining structural integrity during cargo handling and dumping operations.
Implementation Method 1
an elastomeric member. At least a portion of the elastomeric member is positioned within the interior cavity in surrounding relationship with the core member
Implementation Method 2
The core member is movable within the interior cavity relative to the casing in each one of three mutually orthogonal directions
Data Source
AI summary
A vehicle includes a frame, an engine, and a plurality of mount devices. The frame includes a main frame and a sub-frame attached to the main frame. The engine is attached to the sub-frame.