US 5,327,690 A · Erection workbench for constructing a frame

Abstract

The present invention provides a frame constructing method and an erection workbench for constructing frames for reducing the cost for assembling frames, for making it possible to execute the construction works under any weather conditions, further for shortening the term of works, and for enabling to improve safety in the executions, to automate the executions and to save labor. The erection workbench for constructing frames in the present invention comprises an extension column (2) provided at the inside of four column members (C) composing the minimum unit of the frames, a workbench (1) erected between the intermediate portions of the extension column (2), a roof (4) or a workbench (8) erected between the top portions of the extension column (2), and a lifting crane (3) suspended from the workbench (1) or the roof (4) or the extension column (2), and the extension column (2) is composed of a fixed column (2a) supported to a beam member (B) at the downstairs side and a column base (2b) connected to the lower end of the fixed column (2a) and expandable and retractable with respect to the fixed column (2a).

Claims14

Dependent claims

An erection workbench for constructing a building including an erection of a frame by assembling column members and beam members in a vertical direction and a horizontal direction wherein four of said column members constitute a minimum unit of the frame, said erection workbench comprising:

a plurality of extension columns provided at an inside area defined by said four columns members forming said minimum unit of said frame, each of said extension columns comprising a fixed column and a column base;
a plurality of support arms provided at lower ends of said fixed column and said column base for connecting said extension column to said beam members;
a workbench affixed horizontally to intermediate positions of said extension columns for executing construction work on said building, said workbench is provided with construction machines including a lifting crane;
a drive mechanism for extending and retracting said column base with respect to said fixed column for changing the vertical position of said erection workbench;
a plurality of tie-beams horizontally attached to lower positions of said fixed columns;
and
a plurality of wheels provided at said tie-beams such that said wheels roll on said beam members for changing the horizontal position of said erection workbench.

4 more elements

An erection work surface for constructing a frame for a building, said frame comprising columns and interconnected beams arranged at different levels to form the floors of said bulding, comprising:

a work surface for supporting workers or machines used in constructing said building;
a plurality of extension columns vertically supporting said work surface from below, each of said extension columns being supported by said beams arranged together on a first level, said extension columns having a length adapted to position said work surface adjacent a second level of said building which is the next upper level from said first level;
each of said extension columns comprising:
a fixed column adapted to support said extension column on beams arranged together on said first level;
a column base slidably and telescopically arranged with respect to said fixed column and engaging said work surface;
a drive mechanism for vertically sliding said column base with respect to said fixed column, said drive mechanism lifting said column base vertically and telescopically with respect to said fixed column a distance substantially the same as the height of said column base, whereby said work surface is advanced to a position adjacent a third upper level of said building, whereby said work surface can continue upward floor-by-floor such that the construction of said building can progress upwardly;
and
horizontal translation devices mounted on said extension columns for moving said work surface horizontally.

5 more elements

Dependencies are inferred from the claim text.

Erection workbench for constructing a frame

Life of this patent

Erection workbench for constructing a frame

Life of this patent

Abstract

Claims14