Gear Arrangement With Elastic Fixation for Load Distribution
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Solution Overview
Problem
Existing gear arrangements for transforming linear force/motion into rotational torque/motion and vice versa face challenges in achieving a durable, long-lasting design with a high load-to-volume ratio, efficient load distribution, and reduced wear due to uneven load distribution across cog flanks, leading to increased material usage and weight.
Innovation Solution
A gear arrangement featuring a rack with elastically deformable fixation devices that allow limited relative rotation between pinions and primary gears, ensuring even load distribution across all engaging flanks, reducing material usage, and maintaining a compact design while supporting high loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rigid fixation devices are used to connect pinions and primary gears, then the structural stability is improved, but the load distribution across cog flanks becomes uneven leading to increased wear and reduced service life
Solution Approach 1:
The fixation device incorporates an elastic element that allows dynamic adjustment of the relative rotational position between the pinion and primary gear. This elasticity enables the system to adapt to load variations automatically, distributing loads evenly across all cog flanks during operation, thereby reducing wear and extending service life while maintaining structural stability.
Solution Approach 2:
The fixation device changes the rotational parameter (angular position) between the pinion and primary gear through elastic deformation. By allowing controlled parameter variation within tolerance ranges, the system achieves uniform load distribution across cog flanks without compromising the overall structural integrity or requiring complex manufacturing.
2Adaptability or versatility
If additional cog wheels or gears are added to achieve a certain gear ratio, then the gear ratio requirement is satisfied, but the weight and dimensions of the gear arrangement increase
Solution Approach 1:
The gear arrangement is segmented into modular components (pinions, primary gears, fixation devices) that can be independently designed and optimized. This modular approach allows the system to achieve required gear ratios through efficient configuration of fewer components, reducing overall weight while maintaining adaptability for different gear ratio requirements.
3Weight of moving object
If the dimensions of the gear arrangement are reduced to keep weight low, then the load to volume ratio is improved, but the durability and ability to sustain high loads may be compromised
Solution Approach 1:
The fixation device uses elastic materials that combine flexibility with sufficient strength to transmit loads. This composite approach (combining elastic and rigid elements) allows the gear arrangement to maintain high load-to-volume ratio while sustaining high and varying loads, as the elastic element distributes stresses evenly without requiring excessive material.
4Reliability
If elastically deformable fixation devices are used to allow limited relative rotation, then even load distribution across cog flanks is achieved, but the device complexity increases
Solution Approach 1:
The elastic element acts as an intermediary between the pinion and primary gear, mediating the transmission of torque while allowing necessary angular adjustments. This simple intermediary component achieves even load distribution without requiring complex control systems or multiple adjustment mechanisms, thereby limiting the increase in device complexity.
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 solution enables a durable gear arrangement with a high load-to-volume ratio, reduced wear, and extended service life by evenly distributing loads across all cog flanks, minimizing material usage, and maintaining a compact design capable of handling high and varying loads.
Implementation Method 1
At least one of said first primary gears is fixed to the respective pinion by means of an elastically deformable fixation device which is arranged to allow a limited relative rotation between the respective first primary gear and pinion
Data Source
AI summary
A gear arrangement for transforming a linear force and/or motion into a rotational torque and/or motion and vice versa. The arrangement comprises; a rack (10, 110, 210, 510, 1010, 2010, 3010, 4010) exhibiting a longitudinal axis (A) and at least one toothed side extending parallel to the longitudinal axis of the rack, the rack being reciprocally movable along its longitudinal axis. At least two pinions (20, 120, 220, 520, 1020, 2020, 3020, 4020, 5020) are arranged such that each pinion is rotationally meshing with a toothed side of the rack. Each pinion is fixed to a respective first primary gear (30, 130, 230, 530, 1030, 2030, 3030, 4030, 5030) arranged at a first axial side of the pinion. At least two first primary gears are mechanically connected to a common out- or input shaft (60, 160, 560, 1060), such that the at least two first primary gears transmit torque to or from the first out- or input shaft. At least one pinion is fixed to the respective first primary gear by means of an elastically deformable fixation device (40, 41, 42, 140, 1042, 1400, 2400, 3400, 4400, 5400) which is arranged to allow a limited relative rotation between the respective first primary gear and pinion.