Replaceable Wear Inserts for Shearer Loader Guide Shoes
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Solution Overview
Problem
Shearer loader guide shoes and drive assemblies experience high wear due to the heavy weight of the equipment and obstacles, leading to frequent replacements and increased maintenance costs, with existing solutions requiring complex demounting procedures and resource-intensive repair processes.
Innovation Solution
The implementation of movable and replaceable wear inserts on guide shoes, which can accommodate offsets in the rack drive arrangement, reducing wear and allowing only the wear surfaces to be replaced with more durable materials, thereby minimizing downtime and production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the guide shoe is designed as a single integrated component, then the structure is simple, but the wear regions cannot be replaced independently requiring complete guide shoe replacement
Solution Approach 1:
The guide shoe is divided into a base component and separate wear inserts. The wear inserts are detachably connected to the base through receiving structures, allowing independent replacement of worn surfaces without replacing the entire guide shoe assembly.
Solution Approach 2:
The wear-prone surfaces are extracted as separate replaceable wear inserts from the main guide shoe structure. These inserts can be removed and replaced independently when worn, while the base guide shoe remains in service.
2Stability of the object's composition
If the guide shoe is fixed in position, then the mounting is stable, but the running behavior deteriorates due to inability to accommodate rack drive offsets
Solution Approach 1:
The wear inserts are designed to be movable relative to the guide shoe base through pivot connections. This allows the wear inserts to dynamically adjust and accommodate offsets in the rack drive arrangement while maintaining stable mounting through the pivot connection mechanism.
3Reliability
If the entire guide shoe is replaced due to wear, then the reliability is restored, but the downtime increases due to complete replacement procedures
Solution Approach 1:
The guide shoe is segmented into a reusable base and replaceable wear inserts. Only the worn inserts need to be replaced to restore functionality, significantly reducing replacement time compared to replacing the entire guide shoe assembly.
Solution Approach 2:
Wear inserts are designed as pre-fabricated replacement components that can be quickly installed on the guide shoe base. This preliminary preparation of replaceable components enables rapid replacement procedures that minimize equipment downtime.
4Device complexity
If the guide shoe uses conventional mounting, then the device complexity is low, but the resource requirement for mounting and refitting increases
Solution Approach 1:
The guide shoe system is segmented into a base with receiving structures and separate wear inserts. This segmentation allows for simplified mounting procedures where only the wear inserts need to be attached to the base, reducing the overall resources required for mounting and refitting operations.
Data Source
AI summary
A guide shoe for a shearer loader, in particular for a shearer-loader drive assembly, comprising at least one base wall, comprising a guide projection, on the base-wall side, for engaging under a rack drive of a rack drive arrangement, and comprising a guide surface for engaging behind the rack drive. To achieve shorter downtime periods in the case of repairs to the shearer-loader drive assembly due to wear, and in order to reduce their susceptibility to wear, the guide projection and the guide surface are realized on wear inserts that are movably and, preferably, replaceably fastened, or fastenable, to the guide shoe. Movement of the wear inserts could be limited by pivot limiting strips or inhibited by clamping strips.