Split Abrasive Block Mounting for Fast Rail Wheel Tread Service
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Solution Overview
Problem
Existing abrasive block mounting structures in railway vehicles have low efficiency for dismounting, inadequate structural strength, and are prone to wear due to vibrations, leading to operational risks and reduced wheel-rail adhesion.
Innovation Solution
A mounting and dismounting assembly with a mounting pin, pin receiving portion, and locking member, along with a split-type abrasive block design featuring gaps for debris evacuation and heat dissipation, enhances mounting reliability and reduces wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the torsion spring support arms lock the mounting hook in the rectangular cavity, then the mounting efficiency is improved, but the dismounting efficiency becomes low
Solution Approach 1:
The mounting structure is segmented into separate functional components: mounting hooks on support arms for secure attachment, and a distinct dismounting mechanism using a pin inserted through alignment holes. This segmentation allows independent optimization of mounting and dismounting operations, resolving the contradiction between fast mounting and easy dismounting.
2Ease of operation
If the mounting structure uses torsion spring support arms with mounting hooks, then the mounting process is simplified, but the structural strength is insufficient
Solution Approach 1:
The support arm assembly combines multiple materials and structural elements: torsion springs for elastic deformation and shock absorption, rigid mounting hooks for structural strength, and precision-machined alignment holes for accurate positioning. This composite approach maintains ease of operation while significantly improving the ability to withstand vibrations and impacts.
3Ease of manufacture
If the abrasive block is in direct contact with the wheel tread, then the cleaning function is achieved, but heat accumulation occurs
Solution Approach 1:
The abrasive block is segmented into multiple independent abrasive elements arranged in an array, with gaps between them. This segmentation allows heat to dissipate through the gaps while maintaining sufficient contact area for effective cleaning, resolving the contradiction between cleaning effectiveness and heat management.
4Area of stationary object
If the abrasive blocks are arranged closely together, then the cleaning coverage is increased, but debris evacuation becomes difficult
Solution Approach 1:
The abrasive block features non-uniform local qualities: dense abrasive particle distribution in contact zones for effective cleaning, and gaps between abrasive elements for debris evacuation. This local quality variation allows the block to simultaneously achieve high cleaning coverage and effective debris removal, preventing metal inlays formation.
Data Source
AI summary
An abrasive block mounting and dismounting assembly, a mounting and dismounting method, a wheel tread cleaning device, and a railway vehicle.