Movable-Bearing Transmission for Lower Gear Mesh Forces
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Solution Overview
Problem
Existing transmissions experience high force levels due to small wheels meshing with large wheels, leading to potential mechanical stress and inefficiencies.
Innovation Solution
A transmission design featuring a main wheel with a movable wheel bearing, where a wheel drive rotates the main wheel around its axis and a wheel bearing drive adjusts the engagement zone, allowing for opposite or same direction movement, thereby optimizing torque distribution and reducing force levels through complementary torques at the transmission inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If small wheels mesh with large wheels to achieve certain gear ratios, then transmission ratio is achieved, but force levels become excessively high causing mechanical stress
Solution Approach 1:
The transmission system is segmented into two independent inputs: one for torque application and another for engagement zone positioning. This segmentation allows the torque input to be decoupled from the high-force meshing operation, enabling power transmission without proportionally high force levels in the gear mesh.
Solution Approach 2:
The engagement zone acts as an intermediary element that can be independently positioned via the second input. This intermediary allows the system to adjust the meshing conditions and distribute forces more favorably, reducing peak force levels while maintaining the required transmission ratio.
2Stability of the object's composition
If wheel bearing is fixed to maintain stable engagement, then meshing stability is improved, but adaptability to different operating conditions decreases
Solution Approach 1:
The wheel bearing is designed to be movable rather than fixed, allowing dynamic adjustment of the engagement zone position. This dynamic capability enables the transmission to adapt to different operating conditions such as varying torque loads, speeds, and thermal expansions while maintaining stable engagement through active positioning control.
Solution Approach 2:
The second input serves multiple functions: it positions the engagement zone for optimal meshing, compensates for thermal expansions, and enables adaptation to different operating conditions. This multi-functionality allows a single mechanism to address both stability and adaptability requirements simultaneously.
Data Source
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AI summary
The invention relates to a transmission (1), comprising a transmission input and a transmission output, having a main wheel connected between the transmission input and the transmission output, which is rotatably mounted about an axis of rotation (20), and to which a wheel bearing (17) is assigned that is movable perpendicular to the axis of rotation (20), and further comprising a wheel drive (21) for rotating the main wheel about the axis of rotation, which wheel drive is engaged with the main wheel (19) in an engagement zone (26), and a wheel bearing drive (14) for moving the wheel bearing (17). Upon introduction of a torque at the transmission input, the wheel drive (21) rotates the main wheel (19) about the axis of rotation. The wheel bearing drive (14) leads to a movement of the engagement zone (26), wherein the movement of the engagement zone (26) and a circumferential movement of the main wheel (19) in the engagement zone (26) are opposed.