THE WORKING ROBOT SYSTEM OF LNGC CARGO HOLD AND CLEANING METHOD USING IT

摘要

The present invention relates to a robot system (100) capable of working in an LNGC cargo tank (1), including a first body (110) installed at a front end to move along invar tongues (2), which are installed in the LNGC cargo tank (1) at regular intervals, by a guide rail; a second body (120) installed at a rear end to move along the invar tongues (2) by the guide rail; a mechanism (130) coupled to the first and second bodies (110, 120) and having a vertically moving module (130A) and a left and right driving module (130B) so that the first and second bodies (110, 120) can lift and translate in left and right directions; and a working module (140) installed on the first or second body (110 or 120). Therefore, under special environments of the LNGC cargo tank, it is possible to carry out the working of cleaning, welding and inspection while automatically traveling along the invar tongues (2) by the guide rail. Since the system can repeatedly carry out the working after crossing the invar tongue (2) through the vertically lifting movement and the left and right translation movement, the workability is improved, and the safety accident is prevented.