Conveyor belt scrapers

B - Operations – Transporting – 65 – G

Patent

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Details

B65G 45/16 (2006.01)

Patent

CA 2223795

The invention concerns a conveyor belt scraper used to scrape debris from the surface of a conveyor belt (10). The scraper incorporates a segmented scraper blade which includes individual blade segments (22) arranged side by side with one another such that in use each blade segment scrapes a portion of the width of the belt surface. For blade segment there is a blade segment support (28) on which the associated blade segment (22) is supported. Each blade segment support (28) includes pivotally interconnected links (30, 32, 34, 36) forming a closed parallelogram link- age. A support structure (42, 82) is provided to support the parallelogram linkages in side by side relationship adjacent the belt surface. Gas-inflatable biasing means (44, 58) act on the parallelogram linkages such that inflation thereof causes the linkages to deform in a manner to displace the blade segments (22) in a direction lenghtwise of the belt (10) and towards the belt surface. During such displacement, each blade segment (22) moves parallel to itself and maintains a constant inclination to the vertical.

L'invention concerne un racloir utile pour gratter des débris présents sur la surface d'une bande transporteuse (10). Ce racloir comprend une lame segmentée comportant des segments (22) de lame séparés, disposés côte à côte de telle manière que, lors de l'utilisation du racloir, chaque segment de lame racle une portion de la largeur de la surface de la bande. Pour chaque segment de lame, on a prévu un support (28) sur lequel le segment (22) de lame associé repose. Chaque support (28) comporte des éléments articulés (30, 32, 34, 36) reliés entre eux de manière pivotante et formant une liaison articulée en parallélogramme fermé. On a monté une structure (42, 82) destinée à soutenir ces liaisons articulées en parallélogramme, côte à côte et contiguës à la surface de la bande. Des moyens de sollicitation (44, 58) gonflables au gaz agissent sur ces liaisons en parallélogramme, de telle manière que leur gonflage entraîne la déformation de ces dernières parallélogrammes afin qu'elles déplacent les segments (22) de lame dans le sens de la longueur de la bande (10) et vers la surface de celle-ci. Lors d'un tel déplacement, chaque segment (22) de lame se déplace parallèlement à lui-même et conserve une inclinaison constante par rapport à la verticale.

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