Helical Conveyor Roller Alignment
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Solution Overview
Problem
Conventional helical conveyors experience slip due to misalignment between the rolling direction of rollers and the direction of their axes of rotation along the guide surface, leading to increased friction and inefficiency.
Innovation Solution
The design features rollers mounted to slats such that the angle between the rolling direction and the base plane is minimized, with the rolling direction and axis of rotation alignment achieved through a swivel caster mechanism, ensuring minimal slip and reduced friction by adjusting the angle between the rolling direction and the second inclination angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the rollers are mounted with their axis of rotation perpendicular to the slat surface, then the structure is simple and easy to manufacture, but slip occurs between the rollers and guide surface due to misalignment between rolling direction and axis of rotation
Solution Approach 1:
The roller mounting is made dynamically adjustable through a swivel caster mechanism, allowing the roller axis to automatically align with the guide surface direction during operation. This dynamic adjustment resolves the contradiction by enabling both easy initial installation and high operational reliability through automatic alignment that minimizes slip between rollers and guide surface.
Solution Approach 2:
The mounting angle parameter of the roller is changed from a fixed perpendicular orientation to an adjustable orientation via the swivel caster mechanism. This parameter change allows the system to adapt the roller axis angle to match the guide surface trajectory, eliminating slip while maintaining manufacturing simplicity through standardized caster components.
2Device complexity
If the rolling direction of the rollers does not align with the direction of travel along the guide surface, then the roller mounting is simpler, but friction increases due to slip
Solution Approach 1:
The swivel caster acts as an intermediary mechanism between the fixed roller mounting structure and the moving guide surface. It mediates the alignment by allowing the roller axis to pivot and automatically orient itself perpendicular to the guide surface direction, thereby eliminating slip-induced friction losses while keeping the overall system configuration simple.
Solution Approach 2:
The swivel caster mechanism enables the roller mounting to self-align with the guide surface through automatic adjustment during operation. This self-service alignment eliminates the need for complex pre-calculated mounting angles or manual adjustment mechanisms, reducing device complexity while minimizing friction losses through automatic optimization of the rolling direction.
3Manufacturing precision
If the rollers are fixed at a specific angle to the slat surface, then the manufacturing precision is easier to control, but the conveyor cannot adapt to variations in the helical track geometry
Solution Approach 1:
The roller mounting transitions from a static fixed-angle configuration to a dynamic adjustable configuration via the swivel caster mechanism. This allows each roller to independently adapt its mounting angle to match the local geometry of the helical track, maintaining manufacturing precision through standardized caster components while achieving full adaptability to track variations.
Solution Approach 2:
The conveyor belt is segmented into multiple discrete supporting members, each with its own independently mounted roller via a swivel caster. This segmentation allows each roller to adapt locally to the helical track geometry at its specific position, maintaining overall system precision while achieving versatility across the entire conveyor length.
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
This configuration minimizes slip and reduces friction, enhancing the efficiency of the conveyor belt's operation by aligning the rolling direction with the axis of rotation along the guide surface, thereby improving the conveyor's performance.
Implementation Method 1
The rollers which are guided along the radially directed guide surface serve to create low friction between the conveyor belt and the frame under operating conditions
Data Source
AI summary
A helical conveyor for conveying piece goods comprises a frame and an endless conveyor belt which is drivable with respect to the frame along a helical track which extends about a centerline. The conveyor belt comprises discrete supporting members each comprising a substantially rigid slat and a roller. The slats follow a first helical path including a first inclination angle along the first helical path with respect to a base plane extending perpendicularly to the centerline and a second helical path including a second inclination angle along the second helical path with respect to the base plane. Each of the rollers is mounted to the corresponding slat such that the difference of an angle between the rolling direction and the base plane and the second inclination angle is smaller than the difference between the first and second inclination angles.