Drive Bearing Lubrication with a Pressure-Actuated Annular Distributor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current lubrication methods for rail vehicle drive levels require frequent maintenance and manual operation, leading to inefficient lubrication of the guide organ, as the new lubricant covers only a limited angular sector, necessitating frequent re-lubrication and requiring two operators to lift the axle, which is cumbersome and often impractical.
Innovation Solution
An annular lubrication fluid distributor with a movable portion that changes positions based on fluid pressure, ensuring the lubricant is distributed circumferentially around the guide organ, allowing for a single operator to perform the lubrication without lifting the axle, and covering a significantly larger angular sector than traditional methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lubricating fluid follows the shortest path from inlet to outlet through the guide member, then the lubrication operation is simple, but only a limited angular sector (≤30 degrees) of the guide member is lubricated, requiring frequent re-lubrication
Solution Approach 1:
The distributor is made movable between a deployed position (blocking the distribution chamber) and a retracted position (allowing fluid passage). This dynamic element enables the system to switch between distribution and flow modes, resolving the contradiction between operational simplicity and lubrication coverage by allowing complete circumferential distribution without requiring manual shaft rotation
Solution Approach 2:
The distributor is positioned in the deployed state before lubrication begins, pre-blocking the distribution chamber to ensure complete filling with lubricating fluid. This preliminary action guarantees that all angular sectors receive lubrication before the distributor moves to allow fluid passage to the guide member, eliminating the need for frequent re-lubrication
2Reliability
If manual rotation of the shaft is performed to distribute lubricant around the entire circumference, then complete lubrication is achieved, but the operation requires two operators and lifting the axle, making it tedious and impractical
Solution Approach 1:
The distributor automatically moves between deployed and retracted positions based on fluid pressure, enabling self-regulated distribution of lubricating fluid around the entire circumference of the guide member. This eliminates the need for manual shaft rotation and axle lifting, allowing a single operator to perform complete lubrication by simply injecting fluid into the inlet
Solution Approach 2:
The mechanical system requiring manual shaft rotation and axle lifting is replaced by a fluid-pressure-driven movable distributor. The distributor uses fluid pressure to automatically position itself for complete circumferential distribution, substituting complex manual mechanical operations with a simpler fluid-driven mechanism
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 solution enables more efficient and simplified lubrication of the guide organ, reducing maintenance frequency and operational complexity, allowing for lubrication by a single operator without the need for axle lifting, thereby enhancing the longevity and reliability of the drive level.
Implementation Method 1
a movable portion movable between a deployed position in which the distributor closes the annular distribution chamber so as to distribute the lubricating fluid in a portion of the annular distribution chamber and a retracted position in which the distributor allows the passage of the lubricating fluid from the annular distribution chamber into the annular supply chamber
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a shaft drive bearing, the drive bearing (18) being intended to be lubricated by a lubricating fluid and comprising a shaft rotation guide about a transverse axis which defines a through-hole along the transverse axis to receive the shaft; a lubricating fluid inlet into the drive bearing; a lubricating fluid outlet outside the drive bearing; an annular chamber for supplying lubricating fluid to the guide, arranged circumferentially around the transverse axis downstream of the inlet and upstream of the outlet with respect to the circulation of the lubricating fluid.The drive bearing includes an annular lubricating fluid distribution chamber into which the inlet opens and arranged circumferentially around the transverse axis downstream of the inlet and upstream of the supply chamber; an annular lubricating fluid distributor arranged circumferentially around the transverse axis extending between the distribution chamber and the supply chamber and comprising a movable portion that can be moved between a deployed position in which the distributor closes the distribution chamber and a retracted position in which the distributor allows the passage of the lubricating fluid from the distribution chamber into the supply chamber.