Rear Mower Arm Rotation Dynamics for Debris Control
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Solution Overview
Problem
Existing mower assemblies for work machines with rear mount hitches are limited in their ability to change rotation patterns and speed as they pivot, which affects cutting efficiency and debris management.
Innovation Solution
A mounted mower system with a pivotable mower arm and disc assembly that can rotate in different patterns and speed settings, utilizing an electric motor, hydraulic pump, gear assembly, and clutch to adjust rotation based on position, allowing for efficient cutting and debris management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the mower assembly is designed with fixed rotation direction for the discs, then the coupling and power transmission are simplified, but the adaptability to different mowing positions and debris management capabilities are reduced
Solution Approach 1:
The patent applies the dynamics principle by making the disc rotation direction changeable based on mower arm position. The system transitions from a static, fixed-rotation design to a dynamic one where the rotation direction automatically adjusts as the mower arm pivots between different positions, enabling adaptability without requiring complex manual reconfiguration
Solution Approach 2:
The patent implements parameter changes by varying the rotation direction parameter of the discs according to the mower arm position. When the mower arm is in different positions (e.g., left side vs. right side of the work machine), the discs rotate in different directions, allowing the system to adapt to different mowing scenarios and debris ejection requirements
2Ease of operation
If the mower assembly uses a simple coupling system, then the ease of operation is improved, but the ability to control rotation speed and pattern changes is reduced
Solution Approach 1:
The patent applies the self-service principle by designing a system where the disc rotation automatically adapts to the mower arm position without requiring manual intervention. The power transmission system self-adjusts the rotation direction and speed based on the positional parameters of the mower arm, maintaining ease of operation while ensuring optimal cutting performance
Solution Approach 2:
The system incorporates feedback mechanisms where the mower arm position serves as input that automatically triggers corresponding changes in disc rotation parameters. The position of the mower arm provides feedback information that the power transmission system uses to adjust the rotation direction and speed, ensuring cutting efficiency is maintained across different operating positions
3Object-generated harmful factors
If the discs rotate in alternating directions, then debris ejection is improved, but the device complexity and power transmission requirements increase
Solution Approach 1:
The patent uses the dynamics principle to make the disc rotation direction changeable based on operational requirements. Instead of a static alternating rotation system, the discs dynamically adjust their rotation direction according to the mower arm position, achieving effective debris ejection control while simplifying the overall system architecture
Solution Approach 2:
The power transmission system is designed with multi-functionality to handle both single-direction and alternating rotation patterns. The same system can adapt to different operational modes (different mower arm positions) and provide appropriate rotation patterns, eliminating the need for separate dedicated systems for different debris management scenarios
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
The system enables efficient cutting and debris management by adjusting rotation patterns and speed as the mower arm pivots, improving cutting performance and reducing debris ejection.
Implementation Method 1
an electric motor may be mechanically coupled to the at least one disc, the electric motor selectively rotating the at least one disc in either the first rotation pattern or the second rotation pattern
Implementation Method 2
The hydraulic pump may be mechanically coupled to the output of the work machine to provide hydraulic fluid to the hydraulic motor
Implementation Method 3
The gear assembly and clutch may selectively rotate the at least one disc in the first rotation pattern when the mower arm is in the first position and in the second rotation pattern when the mower arm is in the second position
Implementation Method 4
a gear assembly and a clutch coupled to the sub-frame. The gear assembly may have an input adapted to be mechanically coupled to the output of the work machine and an output drive mechanically coupled to the at least one disc
Data Source
AI summary
A mower assembly adapted to be coupled to a hitch of a work machine. The mower assembly has a sub-frame with one or more hitch couplers adapted to be removably coupled to the hitch of the work machine, a mower arm having a first end and a second end, the first end being pivotally coupled to the sub-frame with a pivot pin, the mower arm is pivotable about the first end between a first position and a second position relative to the sub-frame, an arc-shaped rail positioned about the pivot pin for guiding the mower arm as the mower arm transitions between the first position and the second position, and a mower head mechanically coupled to the mower arm at the second end.