Power shovel with variable pitch braces

E - Fixed Constructions – 02 – F

Patent

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Details

E02F 3/34 (2006.01) E02F 3/30 (2006.01) E02F 3/42 (2006.01)

Patent

CA 2141164

A power shovel comprising a frame, a dipper handle mounted on the frame for pivotal movement relative thereto about a generally horizontal dipper handle axis such that the dipper handle has a variable pivotal position relative to the frame, a dipper connected to the handle for pivotal movement relative thereto about a generally horizontal dipper axis such that the dipper has a variable pivotal position relative to the handle, and a variable pitch brace connected between the handle and the dipper at a point spaced from the dipper axis, the variable pitch brace including a spring biasing the dipper in one rotational direction relative to the handle and about the dipper axis, such that the pivotal position of the dipper automatically varies depending on the pivotal position of the handle and on external forces on the dipper.

Pelle mécanique comprenant un bâti, un bras de godet monté sur le bâti et permettant un mouvement pivotant par rapport au bâti autour d'un axe généralement horizontal du bras de godet, de sorte que le bras de godet présente une position de pivotement variable par rapport au bâti, un godet relié au bras pour permettre un mouvement de pivotement par rapport au bras autour d'un axe généralement horizontal du godet de sorte que le godet possède une position de pivotement variable par rapport au bras, ainsi qu'une ferrure à angle variable raccordée entre le bras et le godet en un point espacé de l'axe du godet, la ferrure à angle variable comprenant un ressort exerçant une force sur le godet, dans une direction de rotation par rapport au bras et autour de l'axe du godet, de sorte que la position de pivotement du godet varie automatiquement selon la position de pivotement du bras et selon les forces extérieures imposées au godet.

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