Journal Box Rubber Pad Conductive Mechanism
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Solution Overview
Problem
The existing journal box rubber pads with thin rubber layers on wear liners lack conductive functionality, leading to potential safety hazards due to poor contact and manufacturing accuracy issues, and increased abrasion.
Innovation Solution
Incorporating a conductive mechanism within a glue-injection hole of the journal box rubber pad, with conductive pins and wires connecting to the bogie side frames and adapters, ensuring electric conduction while maintaining elastic buffer performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thin rubber layer is added to the outer surfaces of the upper and lower wear liners, then the contact state between the journal box rubber pad and bogie components is improved, but the conductive functionality is lost
Solution Approach 1:
The patent divides the journal box rubber pad into multiple functional layers: upper wear liner, lower wear liner, and thin rubber layer. Each layer serves a specific purpose - the wear liners provide structural support and conductivity, while the thin rubber layer provides cushioning and improves contact state. This segmentation allows simultaneous achievement of both reliability improvement and conductive functionality preservation.
Solution Approach 2:
The patent uses composite material structure combining metal wear liners with rubber layer. The metal wear liners maintain electrical conductivity while the rubber layer provides elastic cushioning and improved contact. This composite approach resolves the contradiction by combining materials with complementary properties - metal for conductivity and rubber for contact improvement.
2Object-generated harmful factors
If metal wear liners are used without thin rubber layer, then conductive function is achieved, but manufacturing accuracy is difficult to guarantee and abrasion increases
Solution Approach 1:
The patent separates the functions of conductivity and contact improvement into different layers. The metal wear liners (upper and lower) are responsible for conductivity and structural integrity, while the thin rubber layer handles contact state improvement. This segmentation allows each component to be optimized for its specific function, making manufacturing more feasible.
Solution Approach 2:
The thin rubber layer acts as an intermediary between the metal wear liners and the bogie components. It mediates the contact interaction, improving the contact state while allowing the metal wear liners to maintain their conductive function. This intermediary layer protects the metal surfaces from direct abrasion and facilitates better load distribution.
3Device complexity
If metal wear liners are used without thin rubber layer, then structural simplicity is maintained, but abrasion becomes serious and contact state is poor
Solution Approach 1:
The patent introduces a thin rubber layer as a flexible film between the metal wear liners and contact surfaces. This thin film significantly reduces abrasion by providing a softer, more compliant contact surface that distributes loads more evenly. The thin rubber layer is simple in form but effective in reducing wear and improving contact state.
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 enables conductive functionality, improves manufacturing accuracy, reduces abrasion, and enhances contact reliability between wear liners and bogie components, ensuring safe and efficient operation.
Implementation Method 1
a rubber layer (18) which is vulcanized and formed between the upper wear liner (16) and the lower wear liner (17)... the elastic positioning between the wheel sets (13) and the side frames (12) can be obtained; the impulsive load between wheels and rails and the vibration of the vehicle can be reduced
Implementation Method 2
the conductive mechanism is internally positioned in the glue-injection hole; the two ends of the conductive mechanism pass through the first hole and the second hole respectively and contact with two conducted apparatuses... the journal box rubber pad can have conductive function
Data Source
AI summary
The present invention provides an journal box rubber pad and a bogie, wherein the journal box rubber pad comprises a glue-injection hole and a conductive mechanism: the glue-injection hole comprises a cavity formed in a rubber layer, a first hole formed on an upper wear liner and a second hole formed on a lower wear liner. The cavity, the first hole and the second hole are communicated with each other; the conductive mechanism is placed internally in the glue-injection hole; the two ends of the conductive mechanism pass through the first hole and the second hole respectively and be in contact with two conducted apparatuses. The journal box rubber pad and the bogie of the present invention have the advantages that: the journal box rubber boxes not only can overcome the disadvantages that the upper and the lower wear liners are easy to be abraded and have poor contact with a bogie side frame and an adapter because of the requirements of high manufacturing accuracy but also can realize conductive function.