Multi-Driven Shaft Coupling for Pump Load Distribution
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Solution Overview
Problem
Working machines with multiple shafts, such as displacement pumps, face issues with load distribution and synchronization, leading to high forces and bending moments, which reduce durability and require complex coupling systems.
Innovation Solution
A device with multiple driven shafts, each coupled with a carrier shaft, distributes drive torque evenly, eliminating the need for a single-shaft drive and synchronizing couplings, allowing for reduced torsional and bending moments, and enabling automatic load distribution and synchronization of carrier shafts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single drive is used to rotate multiple carrier shafts, then the device structure is simplified, but high forces and bending moments occur leading to reduced durability
Solution Approach 1:
The single drive is segmented into multiple independent driven shafts, where each driven shaft is coupled with a specific carrier shaft. This segmentation distributes the drive torque evenly across all carrier shafts, eliminating the high forces and bending moments that occur with a single drive, thereby improving durability while maintaining structural simplicity.
2Stability of the object's composition
If carrier shafts are coupled with angle-dependent synchronization, then the transport elements mesh correctly, but complex coupling systems are required
Solution Approach 1:
The synchronization function is segmented from the coupling system and integrated directly into the drive mechanism. Each driven shaft is independently coupled with its corresponding carrier shaft, and the angle-dependent synchronization is achieved through the geometric arrangement of the driven shafts and carrier shafts themselves, eliminating the need for complex external coupling systems.
Solution Approach 2:
The synchronization function is merged with the drive mechanism. The driven shafts and carrier shafts are coupled in such a way that the drive torque transmission inherently provides the required angle-dependent synchronization, combining the functions of power transmission and synchronization into a single integrated system.
3Volume of moving object
If a single-shaft drive with synchronizing coupling is used, then the device is compact, but torsional moments and bending moments increase reducing lifespan
Solution Approach 1:
The drive torque transmission path is segmented into multiple independent paths, with each driven shaft directly coupled to its corresponding carrier shaft. This eliminates the need for torque to be conveyed through a single drive spigot and coupling elements, significantly reducing torsional moments and bending moments while maintaining compact dimensions.
Data Source
AI summary
The application relates to a device for conveying a medium having a working machine (2) and multiple carrier shafts (25, 35) with transport elements (22, 32) for the medium to be conveyed arranged on them, along a drive (3) that sets the carrier shafts (25, 35) in rotation, wherein the drive (3) has multiple driven shafts (20, 30), each of which is coupled with not less than one carrier shaft (25, 35).