Gravity Lubrication Chute With Particle Retention Cavities
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Solution Overview
Problem
Internal pollution in gearboxes and reduction gears due to particles like aluminum, copper, bronze, steel, ceramics, and plastics affects reliability and mechanical performance, damaging bearings and gears, and degrades the operation of robotized or automated gearboxes by jamming synchronization systems and clogging lubrication orifices, with existing gravity flow lubrication systems failing to effectively capture and retain all types of particles.
Innovation Solution
A gravity lubrication gutter with a flow floor and guide walls forming a supply ramp, featuring retention cavities with a magnetized outer wall to attract and retain magnetic particles, and inclined conical cavities to trap non-magnetic particles agglomerated around them, ensuring cleanliness within the gearbox by preventing particles from re-entering the hydraulic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ferrite magnets are used to capture magnetic particles in gravity flow lubrication systems, then magnetic particle capture is improved, but non-magnetic particles are not retained and continue to circulate causing damage
Solution Approach 1:
The gutter cross-section is divided into multiple zones: an upper zone with magnets for capturing magnetic particles, and a lower zone with retention cavities for trapping non-magnetic particles. This segmentation allows each zone to specialize in capturing specific particle types, resolving the contradiction between magnetic particle capture effectiveness and comprehensive particle type coverage.
Solution Approach 2:
The lubricating fluid serves as an intermediary that transports all particle types through the gutter. By positioning magnets and retention cavities at different vertical levels within the fluid flow path, the system captures magnetic particles through magnetic attraction in the upper zone while simultaneously allowing non-magnetic particles to settle into retention cavities in the lower zone, achieving multi-type particle retention.
2Reliability
If magnets are placed in the lubrication flow path to capture particles, then particle capture is improved, but the general flow of lubricant may be impeded
Solution Approach 1:
Instead of placing magnets horizontally in the flow path where they would obstruct lubricant flow, the magnets are positioned vertically on the upper wall of the gutter. This vertical positioning in the third dimension allows the magnetic field to capture particles falling through the flow without creating horizontal flow resistance, thus maintaining lubricant productivity while improving particle capture.
Solution Approach 2:
The magnetic field is localized to specific regions on the upper gutter wall where particles are most concentrated during flow. This localized magnetic capture approach ensures effective particle retention in critical areas while leaving other flow paths unobstructed, balancing particle capture effectiveness with maintained lubricant flow productivity.
3Reliability
If retention cavities are added to the gutter floor, then particle retention is improved, but the device complexity increases
Solution Approach 1:
The retention cavities are merged with the gutter floor structure itself, forming an integrated design where the floor contains built-in cavities rather than being a separate component. This merging reduces device complexity by combining particle retention functionality with the existing gutter structure, while still achieving effective retention of non-magnetic particles.
Solution Approach 2:
The retention cavities are nested within the thickness of the gutter floor, creating a multi-layered structure where the floor itself contains embedded retention spaces. This nesting approach adds particle retention capability without significantly increasing the overall external dimensions or structural complexity of the gutter assembly.
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 effectively separates and retains all types of particles, preventing them from re-circulating and causing damage, while maintaining the flow of lubricant without hindering the oil circulation, thus ensuring the reliability and performance of gearbox components.
Implementation Method 1
the floor is covered on the outside with a magnetized wall, capable of attracting the magnetic particles flowing in the flow of lubricant into the cavities
Implementation Method 2
the cavities have a substantially conical cutout, so as to form particle retention cones in the thickness of the floor
Data Source
Figure 1~2C
AI summary
Gravity lubrication gutter for gears and gearbox bearings (1), comprising a flow floor (2), bordered by guide walls (3) so as to form with them a supply ramp (4) suitable for collecting the lubricating fluid projected into the gearbox, followed by discharge channels (5) on targeted lubrication points, characterized in that the floor (2) has cavities (9) for retaining particles (10) flowing into the lubricant stream.