Lawn Mower Catcher Frame Weight Transfer Mechanism
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Solution Overview
Problem
In walk-type lawn mowers of the 'machine-body integrated type', the increasing weight of lawn chips in the grass catcher causes the front roller to weigh down, leading to a lower mowing height, and in 'tow type' mowers, the complexity and length require excessive force for direction changes, deteriorating operability.
Innovation Solution
A catcher frame apparatus with a catcher supporting unit and connecting rod that allows the grass catcher to rotate about the machine body's width axis, transferring the weight of lawn chips to a catcher roller, maintaining consistent mowing height and improving operability by allowing the catcher roller to follow inclined surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the grass catcher is detachably attached to the lawn mowing unit frame (machine-body integrated type), then the structure is simple and maintenance-friendly, but the weight of lawn chips increases the weighing down force on the front roller, causing mowing height to decrease
Solution Approach 1:
The invention extracts the grass catcher from the lawn mowing unit frame and repositions it to be detachably attached to the machine body instead. This separation prevents the weight of lawn chips from being transmitted to the front roller through the mowing unit frame, thereby maintaining consistent mowing height while preserving structural simplicity
Solution Approach 2:
The invention introduces a catcher frame as an intermediary structure between the machine body and the grass catcher. This catcher frame is detachably attached to the machine body and provides a separate support system for the grass catcher, isolating its weight from the lawn mowing unit and enabling independent adjustment and maintenance
2Manufacturing precision
If the lawn mowing unit is mounted via a unit frame in a tow type configuration, then the mowing height remains stable, but the number of components increases and the overall length increases, requiring excessive force for direction changes
Solution Approach 1:
The invention merges the grass catcher support function with the machine body structure through the catcher frame, eliminating the need for a separate unit frame that would be required in a tow type configuration. This integration reduces the number of components and shortens the overall length while maintaining stable mowing height through the detachable attachment design
Solution Approach 2:
The catcher frame serves multiple functions: it provides a detachable mounting structure for the grass catcher, acts as a separate support system that isolates grass catcher weight from the mowing unit, and enables easy attachment and detachment of the grass catcher. This multi-functionality eliminates the need for complex tow type structures while maintaining operational ease
Data Source
AI summary
A catcher frame apparatus is provided including a catcher frame and a catcher roller mounted to the front lower end of a catcher supporting unit of the catcher frame along the direction of the width of a machine body. The catcher frame is connected to the machine body so as to be capable of rotating about an axis of rotation extending along the direction of the width of the machine body, and the catcher supporting unit of the catcher frame is arranged in front of a lawn mowing unit, so that substantially the entire weight of lawn chips stored in a grass catcher supported by the catcher supporting unit is applied to the catcher roller.