Asymmetric Deflection Tracks for Push Chain Wear Reduction
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Solution Overview
Problem
Existing devices for deflecting linear chains experience increased wear due to sliding between adjacent push elements during deflection, as the known circular path leads to relative movement and friction between rounded edge regions.
Innovation Solution
The device features deflection paths that differ between the first and second deflection tracks, with bolts or guide rollers protruding alternately to follow these paths, preventing sliding by allowing roundings to roll off each other, and incorporating guide rollers for improved running properties and reduced friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a circular deflection path is used for the linear chain, then the chain can be deflected smoothly, but sliding occurs between adjacent push elements resulting in increased wear
Solution Approach 1:
The patent applies asymmetry by creating different deflection path courses for the first and second deflection tracks. The first deflection track has a different curvature profile than the second deflection track, which prevents the rounded edge regions of adjacent push elements from sliding against each other while still enabling smooth deflection of the linear chain around the corner.
2Adaptability or versatility
If rounded edge regions are used on push elements, then the chain can buckle and deflect, but relative movement between rounded edge regions causes sliding and wear
Solution Approach 1:
The asymmetric deflection paths ensure that when push elements with rounded edge regions buckle and deflect, the rounded regions follow different trajectories that prevent sliding contact between adjacent elements, thereby eliminating wear while preserving the buckling capability.
Solution Approach 2:
The patent utilizes curved deflection paths with specific radius variations. The first and second deflection tracks have different curvature profiles, which allow the rounded edge regions to roll off each other rather than slide, converting harmful sliding friction into beneficial rolling contact.
3Device complexity
If identical deflection paths are used for both sides of the chain, then the structure is simple, but sliding occurs between adjacent push elements
Solution Approach 1:
The patent deliberately introduces asymmetry between the first and second deflection paths to prevent sliding wear. Although the paths differ in their curvature profiles, the overall structural complexity remains manageable by maintaining similar components (guide inserts, deflection tracks) with modified geometry rather than completely different mechanisms.
Data Source
Figure 1~7
Figure 8
Figure 9~13
AI summary
The invention relates to a device for deflecting push chains, comprising a guide (7) consisting of at least two guide inserts in which deflection tracks (73, 74) are formed, wherein the deflection tracks (73, 74) each have a straight entry and exit section (75) and a straight entry and exit section (76) oriented at an angle thereto, between which a curved section (77, 78) is located. The path of deflection track (73) differs from the path of deflection track (74).