MOBILE TENT DEVICE

PROBLEM TO BE SOLVED: To provide a mobile tent device which can be easily moved according to a yard for spiral steel pipes and which can improve a working environment without deteriorating the quality of products.SOLUTION: A mobile tent device 10 used for covering spiral steel pipes 11 includes an iron-made skeleton 17 comprising columns 13-16 at four corners, respectively, and a roof 12 which comprises a sheet 18 for covering the surrounding the skelton 17 and which is formed in a rectangular shape in plan view. The roof 12 comprises: wide openings 20, 21 at the front and rear; and narrow side wall parts 22, 23 at the left and right, respectively. Widths W2 of the openings 20, 21 are two to five times widths W1 of the side wall parts 22, 23, respectively. Self-traveling drive wheels 28, 29 are attached to the lower parts of the two juxtaposed columns 13, 14, respectively. Driven wheels 30, 31 having respective control means which can synchronously change the moving directions of the driven wheels are attached to the lower parts of the other two juxtaposed columns 15, 16, respectively.