Vertical lift type arm device
AssigneesKomatsu Ltd., Komatsu Zenoah Co.
InventorJunji Mimuro
Life of this patent
Estimating the term…
Abstract
A vertical lift type arm device includes a set of left and right control links each having three connection shaft holes, a set of left and right central mounting parts which are provided at a center part of the main frame, and a set of left and right mounting parts which are provided at rear parts of the lift arms and extend downward. Front end parts of the control links and the central mounting parts are pivotably attached to each other, center parts of the control links and lower end parts of the mounting parts are pivotably attached to each other, and connection axes of the control links and the central mounting parts are provided at a same height as or at a higher position than connection axes of lower end parts of the rear links and the main frame.
Claims13
A vertical lift type arm device in which rear end parts of a set of left and right lift arms are pivotably attached to a set of left and right upright members, which are vertically provided at a rear part of a main frame of a working vehicle, via a set of left and right rear links, comprising:
- a set of left and right control links each having three connection shaft holes;
- a set of left and right central mounting parts which are provided at a center part of said main frame;
- and
- a set of left and right mounting parts which are provided at rear parts of said lift arms and extend downward,
- wherein front end parts of said control links and said central mounting parts are pivotably attached to each other;
- wherein center parts of said control links and lower end parts of said mounting parts are pivotably attached to each other;
- and
- wherein connection axes of said control links and said central mounting parts are provided at a same height as or at a higher position than connection axes of lower end parts of said rear links and said main frame.
A vertical lift type arm device in which rear end parts of a set of left and right lift arms are pivotably attached to a set of left and right upright members, which are vertically provided at a rear part of a main frame of a working vehicle, via a set of left and right rear links, comprising:
- a set of left and right control links each having three connection shaft holes;
- a set of left and right central mounting parts which are provided at a center part of said main frame;
- a set of left and right mounting parts which are provided at rear parts of said lift arms and extend downward;
- and
- a set of left and right lift cylinders which raise and lower said lift arms,
- wherein front end parts of said control links and said central mounting parts are pivotably attached to each other;
- wherein center parts of said control links and lower end parts of said mounting parts are pivotably attached to each other;
- wherein connection axes of said control links and said central mounting parts are provided at a same height as or at a higher position than connection axes of lower end parts of said rear links and said main frame;
- wherein rear end parts of said control links are pivotably attached to upper end parts of said lift cylinders;
- and
- wherein lower end parts of said lift cylinders are pivotably attached to lower rear parts of said main frame.
Dependencies are inferred from the claim text.