Rail Vehicle Current Collector Strip with Embedded Metallic Guide
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing contact strips for rail vehicles face challenges in maintaining low mass and low specific electrical resistance while ensuring continuous sliding contact and efficient power supply, with complex production processes due to layered structures and composite materials.
Innovation Solution
A contact strip design featuring a one-piece carbon body with a disc-shaped guide device integrated into a slot on the contact strip carrier, allowing for simplified production and enhanced conductivity, where the guide device is connected to the carrier for shear-resistant arrangement and precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal impregnation of porous carbon is used to achieve good electrical conductivity, then electrical conductivity is improved, but the dimensions of the contact strip increase due to metal content
Solution Approach 1:
The patent applies local quality by placing metallic guide devices only in specific regions where electrical contact is needed, rather than uniformly impregnating the entire carbon body. The guide devices are positioned at the contact surfaces and extend into slots, providing localized conductivity enhancement without adding metal throughout the entire contact strip volume.
Solution Approach 2:
The patent uses composite materials by combining carbon body with metallic guide devices in a structured configuration. The carbon body maintains its lightweight properties while the metallic guide devices provide conductivity where needed, creating a composite structure that optimizes both weight and electrical performance.
2Reliability
If layered structure with metallic mesh fabrics is used to achieve low specific electrical resistance, then electrical conductivity is improved, but the production process becomes complex
Solution Approach 1:
The patent segments the contact strip into distinct functional components: a carbon body and separate metallic guide devices. This segmentation allows each component to be manufactured independently using simpler processes, then assembled together, avoiding the complexity of creating layered structures with mesh fabrics embedded between carbon layers.
Solution Approach 2:
Instead of embedding metal layers within carbon layers (complex layered structure), the patent inverts the approach by placing discrete metallic guide devices into slots of the carbon body. This reversal of the manufacturing sequence simplifies production while achieving the same electrical conductivity function.
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 design simplifies the manufacturing process, maintains low mass and high conductivity, and ensures reliable electrical contact with reduced shear stress, enabling efficient power supply to rail vehicles.
Implementation Method 1
at least one metallic guide device arranged in the carbon shaped body to form a slot and extends from a contact strip carrier arranged on the contact strip carrier in the slot formed in the one-piece carbon shaped body up to a contact surface of the contact strip, the guide device being designed as at least one disc-shaped guide device extending in a plane transversely to a sliding direction and in the direction of a prestressing force
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a current collector strip (12) for a sliding contact device (10) which bears in a biased fashion against a contact wire (16), in particular in order to supply current to rail vehicles, having a sliding strip (14) which is arranged on a sliding strip carrier (13) and which has a carbon moulding (18) and at least one metallic conducting device (23) which is arranged in the carbon moulding and has the purpose of bringing about locally increased conductivity, wherein the conducting device is embodied as at least one disc-shaped conducting device which extends transversely to a sliding device (19) and in the direction of a biasing force in a plane and which is connected to the sliding strip carrier and extends in a slot (22), formed in the carbon moulding, as far as a contact surface (21) of the sliding strip.