ROV Shock Absorber Longitudinal Mounting Layout
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Solution Overview
Problem
Conventional vehicles designed for rough terrain face challenges in achieving sufficient shock absorber operating range due to space constraints, leading to reduced performance and increased vehicle width or interference issues.
Innovation Solution
The vehicle design includes a unique arrangement of frames and shock absorbers, where the upper frame has longer connections than the lower frame, allowing for a wider space between the arm connector and the upper frame, which supports the shock absorbers and prevents interference, enabling a sufficient stroke and operating range while maintaining a compact layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the upper end portion of the shock absorber is disposed outward of the rear frame to reduce the widthwise distance between the rear wheel and the shock absorber, then the shock absorber can have a sufficient stroke, but the widthwise length of the vehicle increases
Solution Approach 1:
The shock absorber upper end portion is disposed in the front-rear direction (longitudinal dimension) rather than the width direction, specifically between the rear wheels in the front-rear direction. This dimensional repositioning allows the shock absorber to achieve sufficient stroke without increasing vehicle width.
2Object-generated harmful factors
If the auxiliary pipes are disposed at a high position to prevent interference with upper arms and final reduction gear, then interference is avoided, but the space between the auxiliary pipes and seat pipes decreases, reducing shock absorber operating range
Solution Approach 1:
The auxiliary pipes are positioned at a low position (vertical dimension) rather than a high position, specifically below the upper arms and final reduction gear. This low-position arrangement prevents interference with upper components while maintaining sufficient space for shock absorber operation between the auxiliary pipes and seat pipes.
3Reliability
If the shock absorbers are arranged with sufficient operating range, then shock absorbing performance is improved, but the vehicle width increases
Solution Approach 1:
The shock absorbers are arranged in the front-rear direction between the rear wheels rather than outward in the width direction. This longitudinal arrangement allows sufficient operating range and improved shock absorbing performance while maintaining a compact vehicle width.
Data Source
AI summary
A recreational off-highway vehicle ROV includes a first connection subframe connected to a first rear subframe and a main frame, and an arm connector disposed rightward of a left upper arm and leftward of a right upper arm and supporting the right and left upper arms. A distance between first and second upper connections connecting the first rear subframe and the first connection subframe is longer than a distance between first and second lower connections connecting the main frame and the first connection subframe. A first upper end portion of a left shock absorber and a second upper end portion of a right shock absorber are disposed between the first and second upper connections in a rear view of the vehicle.