Transmission Torque Arm Layout for Compact High-Load Shaft Support
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Solution Overview
Problem
Existing drive-side transmission arrangements are often space-consuming and prone to overloading due to high loads, which complicates achieving compactness and reliability.
Innovation Solution
A transmission arrangement where the output shaft is connected to the drive shaft via a torque arm, supporting at least 90% of operational forces, with a flexurally stiff connection to handle transverse forces, and featuring a hollow axial end of the drive shaft and a stub within it, allowing for efficient torque distribution and reduced support needs at the connection point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the transmission is compactly designed to reduce space consumption, then the installation space is reduced, but the arrangement becomes more prone to overloading due to high loads
Solution Approach 1:
The support function is segmented between two distinct elements: the connection point (supporting transverse forces) and the torque arm (supporting torque loads). This segmentation allows each element to be optimized for its specific function, enabling compact design without overloading.
Solution Approach 2:
The torque arm acts as an intermediary element that transfers torque loads from the transmission to the foundation or adjacent machine elements. This intermediary structure enables the compact transmission design by providing a separate path for torque support independent of the drive shaft connection.
2Strength
If the connection between output shaft and drive shaft is made rigid to support transverse forces, then transverse force support is improved, but the arrangement becomes more complex
Solution Approach 1:
The connection between the output shaft and drive shaft combines multiple functions: it provides flexural stiffness for transverse force support while simultaneously enabling torque transmission. This merging of functions into a single connection design reduces overall complexity compared to having separate elements for each function.
3Force
If the torque arm supports most of the torque loads (at least 90%), then the connection point requires less support, but the torque arm structure becomes more critical
Solution Approach 1:
The torque arm provides torque support in a different spatial dimension and path than the drive shaft connection. By discharging torque through the torque arm to the foundation or adjacent machine elements, the system creates a separate load path that reduces the burden on the drive shaft connection point.
Data Source
AI summary
An arrangement includes a drive-side transmission with an output shaft of the transmission, which extends along an axis. A work machine with a drive shaft is connected in a rotationally fixed manner to the output shaft. To improve stability and to save space, the transmission on the work machine, by the connection between the output shaft and the drive shaft and a torque arm, is supported to the extent of at least 90% of the forces arising during operation. The connection of the output shaft and the drive shaft is configured to be flexurally stiff to support transverse forces. The axial end of the drive shaft is embodied as a hollow shaft. The axial end of the output shaft has a stub which is disposed at least partially in the hollow shaft of the drive shaft.