Triangular Frame Structure for Riding Mower Rigidity
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Solution Overview
Problem
Existing riding mower frame structures rely on complex transmission housing configurations, which complicate the reinforcement of vehicle frame rigidity.
Innovation Solution
A riding mower design featuring a triangular structural element formed by coupling parts between the front and rear frames and rollover protective structure elements, providing enhanced rigidity and allowing for separable components for maintenance, with the rear frame positioned under the front frame to lower the center of gravity and improve stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the transmission housing is used directly as a configuration element in the frame structure, then the frame rigidity is improved, but the coupling structure becomes complicated
Solution Approach 1:
The invention divides the frame structure into separate components: front frame, rear frame, and transmission housing, each with distinct functions. The transmission housing is no longer used as a structural coupling element but is instead a separate mounted component, simplifying the overall coupling structure while maintaining frame rigidity through dedicated structural members
Solution Approach 2:
The structural coupling function is extracted from the transmission housing and assigned to dedicated coupling members (front frame coupling member and rear frame coupling member). This separates the transmission's functional role from its structural role, reducing complexity in the coupling structure while preserving frame rigidity
2Strength
If the front frame and rear frame are coupled rigidly to form a triangular structural element, then the frame rigidity is enhanced, but the maintenance accessibility of the drive unit becomes difficult
Solution Approach 1:
The coupling between front frame and rear frame is made dynamically adjustable through detachable coupling members that can be connected or disconnected. This allows the frame structure to transition between a rigid coupled state (for operation) and a separable state (for maintenance), resolving the contradiction between rigidity and maintenance accessibility
Solution Approach 2:
The coupling members are designed with preliminary positioning features and connection mechanisms that facilitate easy assembly and disassembly. This preliminary design of the coupling interface enables quick separation of the rear frame for drive unit maintenance while ensuring rigid connection during normal operation
Data Source
AI summary
A riding mower is provided with a front frame, a rear frame on which a drive unit is mounted, a rollover protective structure (ROPS). A first coupling part couples one front frame and one rear frame. A second coupling part couples a rear end of the front frame and a supporting column of the ROPS. A third coupling part couples the supporting column and the rear frame. The riding mower utilizes at least one triangular structural element defined in part by the first, second and third coupling parts.