| 摘要 |
A vertical lift type arm device, comprising a pair of right and left control links (14) having three connection shaft holes, a pair of right and left center mounting parts (23) provided at the center part of a main frame (20), and a pair of right and left mounting parts (11a) provided at the rear of a lift arm (11) and extending downward, wherein the front end parts of the control links (14) are rotatably pivot-connected to the center mounting parts (23), the center parts of the control links (14) are rotatably pivot-connected to the lower end parts of the mounting parts (11a), and the connection axes (54a) of the control links (14) with the center mounting parts (23) are positioned at the same height as or higher than the connection axes (52a) of the lower end parts of rear links (16) with the main frame (20), whereby the maintainability of an engine from the side and the visibility from an operator cabin in lateral direction can be improved.
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