Aluminum pipe support

Abstract

Problem to be solvedTo provide an aluminum pipe support having lighter weight and higher rigidity compared to an iron pipe support.SolutionAn aluminum pipe support 1 is configured with two pieces of pins 2A, an inner pipe 3 having an outer periphery formed in any one of a regular hexagonal shape, a regular octagonal shape, and a regular decagonal shape, and having, at a position not subjected to insertion of the pin 2A, a cross-sectional area of 1.96 times or larger than a cross-sectional area at a corresponding position of an inner pipe of a targeted-size iron pipe support, an outer pipe 2 having an inner shape allowing the inner pipe 3 to be inserted into, and having, at a position not subjected to the insertion of the pin 2A, a cross-sectional area of 1.35 times or larger than a cross-sectional area at a corresponding position of an outer pipe of the targeted-size iron pipe support. The upper limits of the cross-sectional areas of the inner pipe 3 and the outer pipe 2 are set so that the total weight of the inner pipe 3 and the outer pipe 2 is lighter than the total weight of the inner pipe and the outer pipe of the targeted-size iron pipe support.EffectsThe specified load bearing capacity is satisfied, and drastic reduction in weight and high rigidity are achieved.

1 . An aluminum pipe support configured to support a form for concrete placement, the aluminum pipe support comprising:
 an aluminum outer pipe;   an aluminum inner pipe configured to be inserted into the outer pipe; and   a pin configured to be inserted and extracted through peripheral surfaces of the outer pipe and the inner pipe to fix positional adjustment conducted in terms of an overall height by an axial length of insertion of the inner pipe in the outer pipe, wherein,   two pieces of the pins are provided,   the inner pipe has an outer periphery formed in any one of a regular hexagonal shape, a regular octagonal shape, and a regular decagonal shape, and has, at a position not subjected to insertion of the pin, a cross-sectional area of 1.96 times or larger than a cross-sectional area at a corresponding position of an inner pipe of a targeted-size iron pipe support,   the outer pipe has an inner shape allowing the inner pipe to be inserted into, and has, at a position not subjected to the insertion of the pin, a cross-sectional area of 1.35 times or larger than a cross-sectional area at a corresponding position of an outer pipe of the targeted-size iron pipe support, and   upper limits of the cross-sectional areas of the inner pipe and the outer pipe are set so that a total weight of the inner pipe and the outer pipe is lighter than a total weight of the inner pipe and the outer pipe of the targeted-size iron pipe support.