Work Vehicle Suspension Support Frame Positioning
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Solution Overview
Problem
The existing suspension structure of work vehicles faces inaccuracies in the positional relationship between the suspension arm, suspension spring, and damper due to slight shifts in the joint position between the lower frame and the body frame, affecting the vehicle's stability during travel.
Innovation Solution
The introduction of left and right support frames joined to the lower frame, which support the suspension arms, suspension springs, and dampers, allowing for accurate positioning and increased rigidity by connecting the support frames to the body frame, thereby maintaining the precise relationship between these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lower frame is joined to the body frame directly, then the assembly process is simple, but the positional relationship between suspension components becomes inaccurate
Solution Approach 1:
The support frame is divided into a first support frame connected to the lower frame and a second support frame connected to the body frame. This segmentation allows each support frame to be positioned and fixed independently, ensuring accurate positional relationships between suspension components while maintaining a relatively simple assembly process.
Solution Approach 2:
The support frames act as intermediary components between the lower frame and the body frame. These intermediaries provide precise positioning features that ensure accurate alignment of suspension components (suspension arm, spring, damper) while simplifying the overall assembly process by pre-establishing correct positions before final assembly.
2Manufacturing precision
If the support rigidity is increased by adding more connection points, then the positional accuracy improves, but the device complexity increases
Solution Approach 1:
The support function is segmented into two separate support frames rather than using a single complex rigid structure. The first support frame connects to the lower frame and the second support frame connects to the body frame, providing necessary rigidity and positional accuracy without requiring excessive connection points or complex structural arrangements.
Data Source
AI summary
A work vehicle includes a lower frame 15, support frames 21 joined to left and right portions of the lower frame 15 and extending upward, suspension arms 25 and 26 supported by the support frames 21, and uprights supported by the suspension arms 25 and 26 and supporting wheels. The work vehicle also includes suspension springs 31 connected to the suspension arms 25 and 26 and the support frames 21, and dampers 32 connected to the suspension arms 25 and 26 and the support frames 21. The lower frame 15 is joined to a body frame.