Operator cabin of bulldozer
AssigneeKabushiki Kaisha Komatsu Seisakusho
InventorKunio Ui
Life of this patent
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Abstract
An operator cabin of a bulldozer is formed in a shape of truncated hexagonal pyramid having right and left supporting pillars at the utmost front side which slant forwardly from the top part to an intermediate part of the operator cabin and slant rearwardly from the intermediate part to the bottom part of the operator cabin while expanding so as to progressively widen the distance between the supporting pillars to expand a forward field of view from the operator cabin of the bulldozer to the front equipment, such as a blade, and substantially improve the visibility from the eye point of the operator to the front working equipment even during work at night.
Claims15
An operator cabin, suitable for use on a bulldozer, said operator cabin being formed in the shape of a truncated hexagonal pyramid having a hexagonal roof panel, a front panel, two front side panels, two rear side panels and a rear panel, wherein said front panel is secured between right and left utmost front supporting pillars and each of said front side panels extends rearwardly from a respective one of said utmost front supporting pillars, wherein said right and left utmost front supporting pillars slant forwardly from an upper part of the operator cabin to an intermediate part of the operator cabin and then slant rearwardly from said intermediate part to a bottom part of the operator cabin with a progressively increasing width between said supporting pillars so as to expand a forward field of view through said front side panels from an eye point of an operator in the operator cabin in comparison to a forward field of view through said front side panels from said eye point if said utmost front supporting pillars were to extend straight from said upper part of the operator cabin to said bottom part of the operator cabin.
An operator cabin, suitable for use on a bulldozer, said operator cabin comprising a roof panel, side panels, and positioning bosses, wherein said roof panel is integrally press molded and has a plurality of reference holes on its periphery, wherein said side panels have fitting holes aligned with said reference holes, and wherein each of said positioning bosses extends through one of said reference holes and an aligned fitting hole and is welded to said roof panel and the respective side panel for coupling the respective side panel to said roof panel.
Dependencies are inferred from the claim text.