A drag scraper with self-adjusting tines

Abstract

The utility model provides a kind of with self-adapting adjustment harrow tooth's clearing obstacle drag harrow ware, including main beam, harrow tooth, it is removably installed on main beam, to allow harrow tooth to displace along the extension direction of main beam;Elastic reset member is used to provide a reset force for harrow tooth so that it tends to initial datum, and is configured as: when the force acting on harrow tooth exceeds the threshold of elastic reset member, allow harrow tooth to displace to overcome reset force, to increase the spacing with adjacent harrow tooth, when drag harrow ware encounters a huge, stubborn obstacle that produces extrusion force to multiple harrow tooth, the resistance that each harrow tooth receives is different.This will result in the displacement of one or more harrow tooth is significantly greater than its adjacent harrow tooth, to form a large enough opening surface in local, so that obstacle can be separated from it. After obstacle is separated, compressed spring pushes harrow tooth and automatically resets, restores initial spacing, continues to execute normal clearing obstacle task.

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