Contact Wire Greasing Sleeve for Targeted Clamp-Point Lubrication
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Solution Overview
Problem
Existing greasing devices for contact wires in rail vehicles apply grease uniformly, leading to excessive consumption and environmental pollution, as the grease is stripped off during power consumption and drips down, failing to prevent water accumulation and corrosion at clamping points between the conductor rail and contact wire.
Innovation Solution
A greasing device with a nose-shaped passage opening that presses the contact wire against the bottom side, preventing grease application at the pantograph contact point and ensuring homogeneous grease application only at clamping points, using a funnel-shaped area and guide sleeves for precise positioning and efficient grease distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If grease is applied uniformly to the contact wire, then the contact wire is protected from corrosion, but grease consumption increases and environmental pollution occurs due to grease being stripped off during power consumption
Solution Approach 1:
The passage opening is designed with a nose section that has different functional zones: an upper area that prevents grease application at the pantograph contact point, and a bottom side area that applies grease only at the clamping points. This local differentiation ensures grease is applied only where corrosion protection is needed, preventing waste and pollution from stripped grease.
2Reliability
If grease is applied at the pantograph contact point, then corrosion protection is provided, but grease is stripped off during power consumption leading to uneconomical consumption and environmental pollution
Solution Approach 1:
The nose of the passage opening is specifically designed to prevent grease application at the upper area where the pantograph contacts the wire. By creating a localized grease-free zone at the contact point while maintaining grease application at the clamping points, the invention eliminates the harmful effect of grease being stripped off and polluting the environment.
3Manufacturing precision
If the passage opening is designed with a nose to press the contact wire, then grease application is precisely controlled at clamping points, but the device complexity increases
Solution Approach 1:
The passage opening is segmented into distinct functional areas: a nose section with upper and bottom side zones, and a funnel-shaped area. This segmentation allows precise control of grease application to different locations on the contact wire, achieving high manufacturing precision while keeping the structural complexity manageable through clear functional division.
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
Reduces grease consumption and environmental pollution by applying grease only at necessary points, effectively preventing water accumulation and corrosion at clamping points, ensuring the contact wire remains protected without unnecessary grease application.
Implementation Method 1
a nose oriented against the vertical direction on an upper side, as seen in the vertical direction, which is arranged to press the contact wire against a bottom side of the passage opening
Implementation Method 2
the passage opening has a funnel-shaped area in which an opening width seen in the transverse direction tapers towards the supply line over the longitudinal direction. In this way, the grease is pressed against the contact wire when the contact wire is pulled through the passage opening
Data Source
AI summary
The invention relates to a greasing device for a contact wire which can be clamped into a conductor rail for the electrical energy supply of a pantograph of a rail vehicle, comprising:a basic body extending in a longitudinal direction, a transverse direction perpendicular to the longitudinal direction and a vertical direction perpendicular to the longitudinal direction and perpendicular to the transverse direction,a passage opening penetrating the basic body from a front side, seen in the longitudinal direction, to a rear side, seen in the longitudinal direction, through which the contact wire can be pushed in the longitudinal direction, anda supply line leading into the passage opening for introducing a grease which can be applied to the contact wire,wherein the passage opening as seen in the longitudinal direction after the supply line.