PIPING ATTACHMENT/REMOVAL WORK TOOL OF HYDRAULIC ELEVATOR CONTROL VALVE, PIPING REMOVAL METHOD, AND PIPING CONNECTION METHOD

摘要

To provide a piping attachment/removal work tool of a hydraulic elevator control valve capable of reducing the number of operators required for piping connection/removal work, shortening the work time, and improving the safety.SOLUTION: A piping attachment/removal work tool 10 includes two leg parts 12 linearly arranged in parallel, a fixed plate 20 jointed to the two leg parts so as to be bridged between longitudinal center parts of the leg parts, and a plurality of connection parts 26 for connecting both side parts of the fixed plate at the two leg parts. Bolt through-holes are formed in plural positions in a circumferential direction around a center. The piping attachment/removal work tool can fix a valve to the fixed plate by joining a bolt to a valve through a screw hole formed around a port opening end and the bolt through-holes in the state in which the port opening end of the valve 60 is faced down to be placed on a top side of the fixed plate.SELECTED DRAWING: Figure 8