Single Bearing Rotary Assembly for Amusement Ride Cars
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Solution Overview
Problem
Amusement ride installations, such as big wheels, face mechanical fatigue and issues like slapping noises and part breakages due to dynamic stresses caused by geometric defects in the assembly of cars with multiple bearings, which are complex and costly to address.
Innovation Solution
A single bearing assembly device with a crown secured to the car and a second crown on the mobile support, where the bearing is radially enlarged to facilitate easy engagement and maintenance, reducing hyperstatic conditions and allowing for simpler installation, dismantling, and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple bearings are used to assemble the car to the support, then the assembly becomes more robust and stable, but geometric defects in the assembly structures cause dynamic stresses that lead to mechanical fatigue, slapping noises, and part breakages
Solution Approach 1:
The invention extracts one bearing from the assembly, reducing from multiple bearings to a single bearing. This eliminates the hyperstatic conditions created by multiple bearings and their connecting structures, thereby removing the source of dynamic stresses that cause mechanical fatigue and part breakages, while still maintaining adequate assembly stability through the single bearing configuration.
2Object-affected harmful factors
If a single bearing is used to assemble the car to the support, then mechanical fatigue and dynamic stresses are reduced, but the bearing must be radially enlarged to facilitate engagement and maintenance
Solution Approach 1:
The bearing is designed with radial enlargement that allows dynamic engagement characteristics. The enlarged radial dimensions enable the bearing to accommodate the car during assembly and operation while maintaining the single-bearing configuration that eliminates mechanical fatigue. The dynamic capability allows for easier engagement and maintenance without requiring multiple bearings.
3Strength
If multiple bearings and associated structures are used, then the car can be securely mounted, but the assembly becomes hyperstatic which causes geometric defects to generate detrimental dynamic stresses
Solution Approach 1:
The invention segments the mounting function into a single bearing rather than distributing it across multiple bearings and connecting structures. This segmentation eliminates the hyperstatic conditions that arise from multiple connection paths, thereby removing the mechanism by which geometric defects generate dynamic stresses, while the single bearing maintains adequate mounting security.
4Ease of operation
If cars are mounted with multiple bearings fixed to the same support, then the car can rotate on a horizontal axis, but the relative position of bearings is determined by multiple structures in a hyperstatic manner leading to stress fluctuations
Solution Approach 1:
The invention extracts the redundant bearing structures from the assembly, keeping only a single bearing. This maintains the car's ability to rotate on a horizontal axis while eliminating the multiple structures that determine bearing positions in a hyperstatic manner. The removal of these redundant structures eliminates the source of stress fluctuations that occur as the car rotates, thereby improving reliability.
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 solution reduces mechanical fatigue, simplifies maintenance, and saves costs by using a single bearing, minimizing stress and complexity in the rotary assembly, while ensuring the car remains horizontal despite path slope variations.
Implementation Method 1
a single bearing can be used for assembly on the support
Data Source
AI summary
A mobile unit for transportation of at least one passenger comprises a car accommodating this passenger and an assembly device for fitting this car on a mobile support in rotary manner with respect to a substantially horizontal axis of rotation. The assembly device comprises a single first crown rigidly secured to the car and assembled by a bearing to a second crown performing securing to the mobile support.