High-Pressure Hydrogen Tank Mounting Structure With Hook-Shaped Brackets
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Solution Overview
Problem
Conventional tank fixing methods for high-pressure hydrogen gas tanks result in weight increase when additional fixing members are used to prevent loosening during transportation, which is undesirable.
Innovation Solution
A tank mounting structure with a neck mount featuring projecting portions sandwiched between hook-shaped portions on a bracket, providing increased frictional force and load resistance without needing more fixing members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of fixing members is increased to prevent loosening during transportation, then the reliability of fixation is improved, but the weight of the neck mount increases
Solution Approach 1:
The projecting portions are designed with a curved outer surface having a specific radius of curvature. This curvature increases the contact area between the projecting portions and the bracket, thereby increasing frictional force and preventing loosening during transportation without requiring additional fixing members, thus avoiding weight increase
Solution Approach 2:
The invention changes the geometric parameters of the projecting portions by specifying a radius of curvature between 5mm and 15mm for the outer surface. This parameter modification optimizes the balance between frictional force (preventing loosening) and weight, achieving reliable fixation without excessive weight increase
2Reliability
If the size of projecting portions is increased to provide sufficient frictional force, then the reliability of fixation is improved, but the weight of the neck mount increases
Solution Approach 1:
Instead of increasing the overall size of projecting portions, the invention applies curvature to the outer surface of the projecting portions. This curvature concentrates the frictional force generation at the contact interface with the bracket, achieving sufficient fixation reliability without increasing the overall dimensions and weight of the projecting portions
Solution Approach 2:
The curvature is applied specifically to the outer surface of the projecting portions where contact with the bracket occurs. This local modification of geometry optimizes frictional force generation at the critical contact interface without adding material elsewhere, thus improving fixation reliability without proportional weight increase
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
The structure maintains safety and prevents fixing member loosening during transportation while minimizing weight increase by enhancing frictional force and load resistance.
Implementation Method 1
the bracket has hook-shaped portions that cover the projecting portions; the neck mount is fixed to the bracket with the projecting portions sandwiched between the hook-shaped portions
Data Source
AI summary
A tank mounting structure includes a tank, a frame for mounting the tank, and a neck mount for holding the tank, the neck mount having projecting portions at both ends in the width direction, the frame having a bracket for fixing the neck mount, the bracket having a hook-shaped portion covering the projecting portion, and the neck mount being secured to the bracket with the projecting portion sandwiched between the hook-shaped portions.