Belt Conveyor Drive Shaft Rotor Nesting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing belt-conveying installations in heavy industry face challenges in maintaining the gap dimension between the rotor and stator, especially when the physical position of the installation changes, due to the high load and weight of the rotor, which can cause deflection and relative movement, affecting the stability and operation of the drive shaft.
Innovation Solution
The belt-conveying installation features a drive shaft guided through a rotor, where the rotor surrounds the drive shaft, providing increased stiffness to maintain the gap dimension, and is connected to the drive roller and stator via mechanical devices to ensure stability and prevent deflection, allowing for reliable operation and transport to different locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rotor is laterally mounted on the drive shaft using pegs, then the drive motor can operate, but the gap dimension between rotor and stator cannot be reliably maintained when the physical position changes
Solution Approach 1:
The drive shaft is guided through the rotor, with the drive shaft extending beyond the rotor on both sides. This nested configuration allows the rotor to be centrally positioned on the drive shaft while maintaining structural stability during relocation, ensuring the gap dimension between rotor and stator remains reliable.
Solution Approach 2:
Instead of laterally mounting the rotor on the drive shaft (horizontal arrangement), the invention transitions to a longitudinal arrangement where the drive shaft passes through the rotor along its axis. This dimensional change provides better structural stability and maintains the gap dimension during physical relocation.
2Device complexity
If the drive shaft is laterally connected to the drive motor using pegs, then the direct drive configuration can be implemented, but the rotor deflection and relative movement occur under high load
Solution Approach 1:
The drive shaft is guided through the rotor, creating a nested structure where the rotor is centrally positioned on the drive shaft. This configuration provides better load distribution and reduces rotor deflection under high nominal power conditions while maintaining the direct drive configuration without gearing.
Solution Approach 2:
The invention changes from lateral connection (horizontal arrangement) to longitudinal connection where the drive shaft passes through the rotor along its axis. This dimensional change enhances the structural strength and load bearing capacity of the rotor under high power conditions.
3Power
If the rotor weighs several tons to achieve high nominal power, then the drive motor can deliver required power, but the bearings and pegs are subjected to enormous load
Solution Approach 1:
The invention transitions from lateral mounting to longitudinal guidance of the drive shaft through the rotor. This dimensional change distributes the enormous loads from several-ton rotors more effectively along the drive shaft axis, reducing the stress on bearings and connection points while maintaining high nominal power capability.
Data Source
AI summary
A belt-conveying installation has at least one carrying structure, a conveying belt and at least one drive apparatus for driving the conveying belt. The drive apparatus includes at least one drive shaft, at least one drive-shaft-bearing arrangement, at least one drive roller and at least one independently excited drive motor in the form of a frequency-converter-fed alternating-current synchronous motor with a stator and a rotor. The drive shaft and the at least one drive motor are connected to one another without any gearing, and the rotor and drive shaft are arranged coaxially, each drive shaft being guided through at least one rotor. The belt-conveying installation can be operated and used for heavy industry, in particular for the extractive or mining industry.