Magnetic-Electric Epicyclic Drive Assembly for Compact Torque Control
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Solution Overview
Problem
Existing drive assemblies for work machines, such as construction and agricultural vehicles, are often structurally complex and less compact due to the use of internal combustion engines and traditional drivetrains, which can be improved by integrating a magnetic-electric epicyclic gear set to adjust rotational speed and torque efficiently.
Innovation Solution
A drive assembly for work machines incorporating an energy machine, rotational speed compensating device, and a magnetic-electric epicyclic gear set, allowing for independent operation and compact design by adjusting rotational speed and torque without the need for additional transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional drivetrains with internal combustion engines and multiple transmissions are used, then power transmission is achieved, but structural complexity increases and compactness decreases
Solution Approach 1:
The patent combines the functions of the energy machine, rotational speed compensating device, and epicyclic gear set into a single integrated drive assembly. The epicyclic gear set is directly connected to the energy machine output, merging what were previously separate transmission stages into one compact unit, thereby reducing structural complexity while maintaining power transmission capability
Solution Approach 2:
The drive assembly is designed to perform multiple functions simultaneously: the energy machine provides power, the epicyclic gear set provides both speed adjustment and torque multiplication, and the rotational speed compensating device maintains operational efficiency. This multi-functionality eliminates the need for separate dedicated components for each function, reducing overall device complexity
2Speed
If traditional drivetrains with multiple transmission stages are used, then rotational speed adjustment is achieved, but device compactness decreases
Solution Approach 1:
The patent employs a nested configuration where the epicyclic gear set is directly integrated with the energy machine output shaft. The carrier of the epicyclic gear set is directly coupled to the energy machine output, with the rotational speed compensating device nested within this arrangement. This nesting allows rotational speed adjustment without requiring additional external transmission stages, maintaining compactness
Solution Approach 2:
The epicyclic gear set provides dynamically adjustable rotational speed ratios through its inherent mechanical properties. By varying the engagement and disengagement of gear elements within the epicyclic mechanism, different speed ratios can be achieved without physical reconfiguration or additional transmission stages, enabling speed adjustment within a compact form factor
3Measurement precision
If additional transmission components are added for rotational speed adjustment, then speed control precision improves, but device complexity increases
Solution Approach 1:
The patent replaces complex multi-stage mechanical transmission systems with a single epicyclic gear set that provides precise rotational speed control through its inherent mechanical ratio. The direct connection between the energy machine output and the epicyclic gear set carrier eliminates intermediate transmission components, achieving speed control precision with fewer parts
Solution Approach 2:
The epicyclic gear set enables precise rotational speed control by changing the effective gear ratio through controlled engagement of different gear elements. This parameter change approach allows for precise speed adjustment without adding multiple fixed-ratio transmission stages, maintaining device simplicity while achieving the desired control precision
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 proposed drive assembly achieves a simpler and more compact configuration by using a magnetic-electric epicyclic gear set to adjust rotational speed and torque, enhancing efficiency and reducing structural complexity.
Implementation Method 1
a magnetic-electric epicyclic gear set (42), in particular a magnetic-electric epicyclic gear set with an integrated electric machine, wherein the epicyclic gear set (42) is arranged for setting and/or adjusting a rotational speed and/or a torque of the first power output (32) and/or of the rotational speed compensating device (44)
Data Source
AI summary
A drive assembly for a work machine includes an energy machine, a rotational speed compensating device, a first power output, and a magnetic-electric epicyclic gear set connected to the energy machine via a drive shaft, the magnetic-electric epicyclic gear set being arranged to adjust the rotational speed of one or more of the first power output or the rotational speed compensating device.