Brake Head Wear Plate Securing for Railway Particle Collection
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Solution Overview
Problem
The existing friction assemblies in railway braking systems face issues with secure connection between the collection part and the sole carrier, leading to potential detachment under vibrations and forces, which can be detrimental, especially at high vehicle speeds.
Innovation Solution
Incorporating a connection mechanism with a fixing element, such as a rod and rings, that secures the part to the sole carrier when the friction assembly is fixed on the brake shoe, ensuring it remains in place as long as the fixing element is engaged, and utilizing junction rings and plates for effective particle suction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the part is secured to the sole carrier using existing friction assembly methods, then the friction assembly can collect particles emitted during braking, but the connection between the part and sole carrier may detach under vibrations and forces at high vehicle speeds
Solution Approach 1:
The connection mechanism is divided into separate functional elements: a fixing element (rod or bolt) that provides primary mechanical attachment, and a connection element (ring or loop) that engages with the fixing element to prevent detachment. This segmentation allows each element to be optimized for its specific function while working together to solve the reliability problem.
Solution Approach 2:
The connection element (ring or loop) is designed to nest around the fixing element (rod or bolt), creating an interlocking mechanism where the ring cannot easily detach from the rod without deliberate action. This nested configuration provides inherent security against vibrations and forces during high-speed operation.
2Reliability
If a secure connection mechanism is added to prevent detachment, then the reliability of the part connection improves, but the device complexity increases
Solution Approach 1:
The fixing element serves dual purposes: it provides the primary mechanical attachment between the friction assembly and brake shoe, and simultaneously acts as the anchor for the connection element that prevents part detachment. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity.
Solution Approach 2:
The connection mechanism uses simple, inexpensive elements such as a basic ring or loop and a standard fixing rod or bolt. These components are easy to manufacture and replace if needed, providing high reliability without significant complexity or cost increase. The simplicity of the design allows for easy maintenance and replacement.
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 configuration enhances the security of the connection between the part and the sole carrier, preventing detachment and improving the effectiveness of particle suction during braking.
Implementation Method 1
a suction device (not shown) and which allows the suction through the duct 128 and the hole 138 of the particles resulting from the braking of the railway vehicle
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a friction assembly (1) for a railroad disc brake system for railroad rolling stock, the friction assembly (1) comprising, on one hand, a brake head (3) and, on the other hand, at least one wear plate (2) made of friction material comprising a first face (21) which is the friction face, and a second face (22) opposite the first face (21), the wear plate (2) being suitable for being secured to the brake head (3), the friction assembly (1) further comprising a part (84) that is able to collect the particles emitted by said wear plate (2). The part (84) comprises a connection (90) that is able to cooperate with a fastening element (210) that serves to fasten the fiction assembly (1) to a brake clip (200) in such a way that the part (84) is held in a position of being secured to said brake head (3) when the fastening element (210) fastens the friction assembly (1) to the brake clip (200).