Magnetic Yaw Compensation for Transport Device Guide Rollers
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Solution Overview
Problem
Conventional transport systems with offset guide rollers suffer from yaw-induced wear and inefficiency, particularly in applications like food and pharmaceutical production, due to non-ideal rolling movements and parasitic moments, leading to premature failure and particle generation.
Innovation Solution
A compact and lightweight transport device with non-offset guide rollers and a magnetic compensating device using coils and ferromagnetic counter-elements to manage yaw moments, ensuring optimal rolling and reduced wear by controlling magnetic forces proportional to distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If offset guide rollers are used to support yaw moment, then the trolley can be stabilized, but the guide rollers experience non-ideal rolling movement leading to high wear and particle generation
Solution Approach 1:
The patent replaces the mechanical offset guide roller arrangement with a magnetic compensation system. Electromagnetic actuators generate magnetic forces that counteract yaw moments, eliminating the need for offset mechanical guide rollers. This substitution of mechanical support with magnetic field-based compensation resolves the wear and particle generation problem while maintaining trolley stability.
Solution Approach 2:
The patent changes the control parameters of the guide rollers from fixed offset positions to dynamically adjustable forces. By controlling the magnetic actuators to apply forces proportional to the yaw moment, the system achieves stabilization without the mechanical wear associated with fixed offset roller arrangements.
2Reliability
If three offset guide rollers are arranged to prevent parasitic moments, then the minimum size increases to more than 2 times the diameter of the guide rollers, but the trolley can be stabilized
Solution Approach 1:
The patent replaces the complex mechanical arrangement of three offset guide rollers with a simpler magnetic compensation system. The electromagnetic actuators provide yaw moment compensation through controlled magnetic forces, eliminating the need for the large minimum size requirement of the mechanical roller arrangement.
3Reliability
If guide rollers are arranged in one plane to prevent parasitic moments, then the trolley can be stabilized, but the guide rollers do not perform ideal rolling movement
Solution Approach 1:
The patent substitutes the mechanical guide roller rolling support with electromagnetic force-based support. The magnetic actuators generate forces that stabilize the trolley without requiring the guide rollers to perform ideal rolling movement, thereby eliminating transverse movement and associated wear.
4Duration of action of moving object
If a magnetic compensating device is introduced to manage yaw moments, then wear is reduced and service life is extended, but the device complexity increases
Solution Approach 1:
The patent replaces the wear-prone mechanical guide roller system with an electromagnetic compensation system. Although this introduces magnetic actuators and control electronics, it eliminates the need for mechanical wear components, thereby extending service life while managing complexity through electronic control.
Solution Approach 2:
The patent changes from mechanical parameter adjustment (roller positions) to electromagnetic parameter control (magnetic forces). The control system regulates magnetic field strengths to compensate for yaw moments, providing a more precise and wear-free method of stabilization compared to mechanical adjustments.
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 solution achieves a significant reduction in wear and extended service life of guide rollers, minimizing particle generation and enabling energy-efficient operation with reduced complexity in control systems.
Implementation Method 1
The magnetic coils are controlled in such a way that the counter-elements are pushed away from the running rail at the same time in the direction of the transverse axis. This repulsion of the two opposing counter-elements from the running rail leads to a support of the yawing moment
Implementation Method 2
The guide rollers are rotatably arranged on the trolley. The axes of rotation of the guide rollers are parallel to the vertical axis of the trolley. Since, according to the invention, the guide rollers are no longer offset, the guide rollers can roll optimally and thus have the lowest possible wear.
Data Source
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AI summary
The invention relates to a transport device (1) for conveying a product, comprising a stationary running rail (2) which extends along a longitudinal axis (3); a cart (6) with a height axis (5) which is perpendicular to the longitudinal axis (3), said cart being guided on the running rail (2); guiding rollers (7) which are arranged on the cart (6), can be rotated about rotational axes (8) perpendicular to the longitudinal axis (3), and roll on the running rail (2), wherein the rotational axis (8) of each guiding roller (7) intersects the same straight line (9), which is perpendicular to the longitudinal axis (3); and a compensating device for compensating for a yaw moment (M) of the cart (6) about the height axis (5), comprising multiple magnetic coils (12) arranged along the running rail (2), at least two ferromagnetic or permanent magnetic counter elements (11) which are arranged on the cart (6) and which are arranged on both sides of the running rail (2), and a control device (18) for controlling the magnetic coils (12) such that the counter elements (11) can be simultaneously pushed away from the running rail (2) in the direction of a transverse axis (4), said transverse axis (4) being defined as perpendicular to the longitudinal axis (3) and perpendicular to the height axis (5).