Fastening Spider Leg Geometry for Stable Wear Lining Clamping
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Solution Overview
Problem
Existing fastening devices for wear-resistant lining elements are complex, expensive, and often fail to securely attach these elements to support surfaces, leading to premature wear, increased noise, and costly replacements due to inadequate abutment and mechanical instability.
Innovation Solution
A fastening spider with a mounting portion and legs having an outer and inner underside, where the inner portion is closer to the mounting portion, providing a uniform clamping force distribution that enhances holding capability and reduces noise, featuring a simple construction for easy installation and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing fastening devices are used to secure wear-resistant lining elements, then the lining elements can be attached to support surfaces, but the attachment is insufficient and leads to premature wear, noise, and mechanical instability
Solution Approach 1:
The fastening device is segmented into a mounting portion and multiple legs, where each leg independently contacts the support surface. This segmentation allows the clamping force to be distributed across multiple contact points, improving attachment reliability while keeping each individual leg simple in structure.
Solution Approach 2:
The legs are designed with an angled configuration relative to the mounting portion, introducing a dimensional aspect that allows the fastening device to conform to the support surface more effectively. This angular arrangement improves contact stability and attachment reliability without significantly increasing overall device complexity.
2Reliability
If complex fastening devices with bolts and washers are used, then the lining elements can be secured, but the installation and replacement processes become time-consuming and costly
Solution Approach 1:
The fastening device is designed as a single integrated component with a mounting portion and multiple legs, eliminating the need for separate bolts and washers. This segmentation into one unified piece allows for rapid installation and replacement while maintaining stable fastening through the distributed leg structure.
Solution Approach 2:
The fastening device is designed to be self-contained with all fastening functions integrated into the single component. The legs automatically contact the support surface and provide stable attachment without requiring additional fastening elements, enabling quick installation and replacement operations.
3Reliability
If conventional fastening means are used, then the wear lining can be mounted, but the abutment against the support surface is insufficient leading to increased noise and premature damage
Solution Approach 1:
The mounting portion is segmented into multiple legs that independently contact the support surface, distributing the abutment force across multiple points. This segmentation improves abutment quality and reduces noise while maintaining manufacturing simplicity through the use of a single integrated component without complex assemblies.
Data Source
AI summary
A fastening spider (1) and a method of fastening a wear-resistant lining element (2) to a support surface (3), over which wear-resistant lining element (2) material in the form of pieces or particles is intended to move. The fastening spider (1) comprises a mounting portion (5) for mounting positioning and clamping to the support surface (3) and at least one leg (8a-8b) projecting from the mounting portion (5) and having an underside for holding the wear-resistant lining element (2) to the support surface (3). The underside of the leg has an outer portion (10) and an inner portion (11), the inner portion (11) being positioned closer to the mounting portion (5) than the outer portion (10). The outer portion (10) is, at least in the mounting positioning of the mounting portion, positioned closer to the support surface (3) than the inner portion (11).