CARGO RECEIVING PLATFORM ELEVATING DEVICE FOR CARGO HANDLING VEHICLE

摘要

PROBLEM TO BE SOLVED: To prevent joint damage by minimizing protrusion of a joint connecting a cylinder barrel of a hydraulic cylinder to an oil pressure duct from a cylinder barrel outer surface and effectively avoiding mutual interference between the joint and other objects in a cylinder periphery caused by operation of the hydraulic cylinder in a cargo receiving platform elevating device for a cargo handling vehicle journaling a cargo receiving platform so as to rotate and derrick to an elevating frame elevatingly driven by the hydraulic cylinder. SOLUTION: The joint J is integrally connected to a terminal part of the oil pressure duct A and it is extended along the cylinder barrel 10 outer surface. It is provided with a joint main body Jm having a joint oil chamber 16 continuous with an oil passage inside the oil pressure duct A in its interior, and a bolt Jb screwed to the cylinder barrel 10 from its side by penetrating the joint main body Jm so that a shaft part outer circumference faces the joint oil chamber 16. A communication oil passage 18 communicating a hydraulic oil chamber c inside the cylinder barrel with the joint oil chamber 16 is formed on the bolt Jb.