PURPOSE: To provide an inside-pipe shifting work dolly which largely contributes to the speedy restoration of the attitude of a dolly, reduction of fatigue of an operator, and the stability and safety in the inside-pipe work and the improvement of the working efficiency.
CONSTITUTION: A surrounding body 15 having a handrail is installed in the upper part of a dolly base part having each pair of driving wheels 13 and adjusting wheels 14, and attitude control is carried out by oscillating the adjusting wheels 14 in the necessary direction through an attitude joint adjusting rod 23 by operating an attitude adjusting handle 22. Further, a rolling-down preventing fixing frame which turns left and right is installed on the handrail, etc., of the surrounding body, and the rolling-down of the dolly base part is prevented by attaching the top edge of the rolling-down preventing fixed frame with an inside-pipe wall, adjusting the turning angle of the rolling-down preventing fixed frame, and each cylindrical scaffolding board receiving part is installed at the left and right of the dolly base part, and an inside-pipe shifting work dolly in which the work scaffolding board is installed in demountable manner on the cylindrical scaffolding board receiving part is obtained.
OONISHI YASUMASA
HAMASUNA TOUJIROU
TOSHIBA CORP