Integrated Belt Conveyor Support Station for Nip Angle Guarding
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Solution Overview
Problem
Belt conveyor nip angles pose a significant safety risk as operators can get caught between the conveyor belt and rollers, despite existing guards which do not fully mitigate this hazard.
Innovation Solution
A support station design with reinforced protection at nip angles, featuring roller guards and gap guards made of materials with an elastic modulus of 50-400 MPa, integrated into a single part with a continuous upper edge, and adjustable slots to prevent access through gaps between rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional roller guards are installed at each support roller, then protection against nip angles is improved, but gaps between rollers remain unprotected creating safety risks
Solution Approach 1:
The patent combines multiple guard functions into a single integrated guard structure that simultaneously protects multiple rollers and covers gaps between them. This unified guard eliminates the vulnerability of separate guards by providing continuous protection across the entire roller assembly, merging the protective function against nip angles with gap coverage.
Solution Approach 2:
The guard design extends protection into the gap dimension by incorporating gap coverage as an integral part of the guard structure. Rather than only addressing nip angles at roller contacts, the guard projects into the space between rollers to prevent access to hidden nip angles formed in gaps, adding a spatial dimension to the protection.
2Reliability
If multiple separate guards are installed for each roller and gap, then comprehensive protection is achieved, but device complexity increases
Solution Approach 1:
The patent merges multiple separate guard components into a single integrated guard structure that performs the protective function for multiple rollers and gaps simultaneously. This consolidation reduces the number of discrete parts, simplifies installation and maintenance, while maintaining comprehensive protection coverage.
Solution Approach 2:
The unified guard structure serves multiple protective functions simultaneously: it protects individual rollers from nip angles, covers gaps between rollers, and provides a continuous barrier against operator access to dangerous zones. This multi-functionality eliminates the need for separate specialized guards for each protective need.
Data Source
AI summary
A support station includes a frame, at least two support rollers separated transversely by a gap, and a nip angle protector, which includes, for the or each gap, a gap protector placed longitudinally opposite the gap on an upstream side of the gap. The support station can be manufactured by obtaining a profile with a continuous upper edge and a continuous lower part along its entire length, and cutting the space and the slots, by T-punching the profile.