Linear Slide Reverse Drive Mechanism for Combine Feeders
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Solution Overview
Problem
Existing reverse drive mechanisms for agricultural combines are often complex, inefficient, and prone to damage due to lack of rigidity and proper support, requiring separate reversing drives for feeders and headers, which are not reliable or cost-effective.
Innovation Solution
A reverse drive engaging mechanism with a power unit and support structure that allows linear movement between disengaged and engaged positions, utilizing a fluid actuator and biasing element to securely engage the output gear with the drive gear, ensuring stability and efficient power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pivoting support structure with spring suspension is used to support the power unit, then the power unit can be moved between engaged and disengaged positions, but the support structure becomes less rigid and may cause violent gear contact resulting in damage
Solution Approach 1:
The support structure is divided into a fixed support portion and a movable support portion that can slide linearly relative to each other. This segmentation allows the power unit to be moved between engaged and disengaged positions while maintaining rigidity through the fixed support portion, eliminating the need for spring suspension and pivot joints that compromise structural strength.
Solution Approach 2:
A slide member acts as an intermediary between the fixed support structure and the power unit. The slide member provides a controlled linear movement path with guide members that constrain motion to a straight line, enabling position changes without requiring flexible pivot joints or spring mechanisms, thus maintaining support structure rigidity.
2Adaptability or versatility
If a separate reversing drive with complex mechanism is used, then reverse operation capability is achieved, but the device complexity increases and reliability decreases
Solution Approach 1:
The reversing drive mechanism is merged with the existing feeder drive system by directly engaging the power unit's output gear with the drive gear of the feeder conveyor mechanism. This integration eliminates the need for separate reversing drives and complex transmission mechanisms, reducing device complexity while maintaining reverse operation capability.
Solution Approach 2:
The support structure incorporates a slide member that can dynamically move between engaged and disengaged positions along a linear path. This dynamic positioning capability allows the power unit to be selectively connected or disconnected from the drive gear, enabling reverse operation when needed while simplifying the overall mechanism compared to permanent complex reversing drives.
3Ease of operation
If the power unit is suspended by spring above the drive gear, then the power unit can be positioned, but violent contact may occur during breakage or sudden movements causing gear damage
Solution Approach 1:
The linear slide mechanism provides controlled movement with guide members that prevent sudden drops or violent contacts. The structured linear path acts as a mechanical constraint that cushions against abrupt movements, eliminating the need for spring suspension and preventing gear damage during unexpected events while maintaining ease of positioning.
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 mechanism is simple, sturdy, and reliable, providing effective reverse operation with high torque capability for dislodging blockages without damaging components, and is cost-effective compared to prior solutions.
Implementation Method 1
The actuator can be any conventional type, such as a fluid actuator
Implementation Method 2
The actuator and biasing element can be used in combination, with the biasing element, such as a spring, urging the power unit toward the disengaged position
Data Source
AI summary
A reverse drive engaging mechanism for a feeder of an agricultural combine, including a power unit including a drive motor having an output gear drivingly rotatable by the motor about an output axis therethrough, and support structure supporting the power unit and configured to be fixedly mounted proximate to a drive gear of a mechanism to be reversed. The support structure supports the power unit such that when the support structure is mounted the output axis will be substantially parallel to a drive axis about which the drive gear is rotatable, and the support structure allows the power unit to be moved substantially linearly in a transverse direction relative to the axes between a disengaged position wherein the output gear is disengaged from the drive gear, and an engaged position wherein the output gear is engaged with the drive gear. The mechanism includes an actuator controllably operable for linearly moving the power unit at least from the disengaged position to the engaged position, the actuator being operable for initially causing initial rotation of the output gear during the engagement with the drive gear, and a mechanism for withdrawing or disengaging the output from the drive gear after use.