Chain Block Lock Widening for Higher Tensile Load Transfer

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Solution Overview

Problem

Chain block locks in existing conveyor and mining technologies are a weak point in power transmission, requiring a design that enhances tensile force transmission while maintaining structural simplicity and compatibility with existing chain drives.

Innovation Solution

A chain block lock with elongated halves featuring a widening on one half's upper edge, extending over 80-90% of its length, which protrudes laterally and allows for increased tensile force transmission without increasing installation height, and a wave-shaped course for optimized force flow, along with a central bar for separate chain link insertion and preventing constriction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a conventional chain lock design is used, then the structure remains simple and installation height is maintained, but the tensile force transmission capability is limited and represents a weak point in the chain

Engineering Contradiction:
Improvetensile force transmission capabilityVSAvoidstructural complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The patent applies local quality by introducing a widening only in specific regions (at the ends and in the middle) of the chain lock block, rather than uniformly increasing the entire structure. This localized widening reinforces critical areas that experience highest stress concentrations, thereby improving tensile force transmission capability while maintaining overall structural simplicity and avoiding unnecessary material usage throughout the entire component

Inventive Principle:
Principle #3Local quality

2Strength

If the chain lock block width is increased to improve tensile force capacity, then the strength increases, but the installation height and compatibility with existing chain drives are compromised

Engineering Contradiction:
Improvetensile force capacityVSAvoidcompatibility with existing chain drives
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The patent implements local quality by strategically positioning widenings only at critical stress regions (ends and middle sections) rather than uniformly increasing the block width. This allows the chain lock to achieve enhanced tensile force capacity through localized reinforcement while maintaining the overall compact dimensions necessary for compatibility with existing chain drive systems and sprockets

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent applies dimensionality change by extending the block width laterally in specific zones through the widening features, creating a multi-dimensional structural optimization. The widenings project beyond the standard block boundaries in targeted areas, increasing the effective load-bearing cross-section where needed, while the overall envelope dimensions remain compatible with existing chain drive installations

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Strength

If the chain lock design is modified to increase tensile force capacity, then the strength improves, but the construction simplicity is compromised

Engineering Contradiction:
Improvetensile force capacityVSAvoidconstruction simplicity
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The patent applies local quality by introducing widenings only in specific critical regions (at the ends and middle of the block) rather than uniformly complicating the entire structure. This localized approach reinforces areas experiencing highest stress concentrations while maintaining overall construction simplicity and ease of manufacture through a relatively straightforward geometric modification that can be integrated into existing manufacturing processes

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4222392B1Chain block lock
Publication Date: 2024.08.07 THIELE GMBH & CO KG
  • EP4222392B1 patent drawingFigure 1~2
  • EP4222392B1 patent drawingFigure 3~4
  • EP4222392B1 patent drawingFigure 5~7

AI summary

The invention relates to a block lock (1) for connecting two chain ends, wherein the block lock (1) has two elongate block lock halves (2, 3) which extend with their respective longitudinal direction in the chain longitudinal direction (4) and, when plugged into one another, have a receiving space (5) for receiving the chain ends, characterized in that a block lock half (2, 3) has a widening (8) at an upper edge on both sides, which widening (8) extends over at least 80%, preferably 90%, of the length L of the block lock half (2, 3).