SLIDING DOOR DEVICE FOR CAB

PROBLEM TO BE SOLVED: To realize a smooth door opening and closing operation and a smaller inertial force for improving the durability by providing a first link pivoted at the door side and a second link pivoted at the cabin side such that the links configure opening/closing link means for the sliding door engagement via an interlocking fulcrum. SOLUTION: A door 12 provided at an entrance 11 is moved along guide rails 23A, 23B provided on the upper and lower parts of a left side surface part 22 of a cabin (cab) 9 so as to open or close the entrance 11. The door 12 is supported on the cab 9 side by upper and lower opening/closing link means 30A, 30B. The upper opening/closing link means 30A comprises a first link with one end pivoted on the door 12 side by a rotation fulcrum, and a second link with one end pivoted on the cab 9 side by a rotation fulcrum. The tip ends of the links are pivoted so as to be engaged via the rotation fulcra for configuring the opening/closing linking means 30A, 30B, disposed inside the door 12. Accordingly, the operation force can be reduced.