Convertible Mower Deck Mulch Actuator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing convertible mower decks require operators to reach outside the operator station to control levers on the deck for switching between discharge and mulching positions, and they often have linkages above the deck connecting pivoting gates or baffles, which can be inconvenient.
Innovation Solution
A mulch on demand actuator with a switch on the control console and an extendable actuator ram connects to linkages under the deck, allowing operators to pivot gates between positions without leaving the station, eliminating the need for external control levers and deck-mounted handles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If control levers are mounted on the deck for switching between discharge and mulching positions, then the mower deck can be converted between positions, but the operator must reach outside the operator station to control the mower deck
Solution Approach 1:
The patent introduces an intermediary control system where a switch inside the operator station activates an actuator (electrical, hydraulic, or pneumatic) that remotely operates the gates on the deck. This mediator eliminates the need for the operator to physically reach the deck-mounted levers while maintaining full control capability.
Solution Approach 2:
The patent replaces the direct mechanical connection (operator hand on lever) with an automated actuation system. The switch triggers an actuator that mechanically moves the gates, substituting the manual mechanical control with an automated electromechanical or hydraulically actuated system.
2Adaptability or versatility
If linkages are placed above the deck connecting pivoting gates or baffles, then the gates can be pivoted between positions, but the mechanism complexity increases
Solution Approach 1:
The patent relocates the linkage system from the traditional above-deck position to underneath the deck. This spatial reconfiguration reduces visual and mechanical complexity in the operator's field of view while maintaining the same gate positioning functionality through an alternative structural arrangement.
Data Source
AI summary
A convertible mower deck has a plurality of cutting chambers with a rotary cutting blade in each chamber and a side discharge opening from one of the cutting chambers, pivoting gates between the adjacent cutting chambers, and a pivoting side discharge door between a cutting chamber and the side discharge opening. Each of the gates and side discharge door are movable between a discharge or collection position and a mulching position. A mulch on demand actuator includes a switch in an operator station that causes a pivot control plate on a shaft to rotate and move linkages between the gates and door between the discharge or collection position and mulching position.