| 摘要 |
A sectional folding upwards gate has even number of sections with equal thickness, a frame and mechanism for actuating sections. The sections are connected in sequence with the lower and the upper neighboring broad horizontal sides by means of arrangement of hinges with alternation with inner and outer placement. On sides of each section in reversed-diagonal order as to hinges laced two roller mechanisms are arranged that have at one axis one or two rollers, or two rollers and side fork hinge, and two additional end rollers on the last section. The vertical section of the frame comprises two guides wherein rollers move and which consist of outer rod with axial branches, inner rod with curved sections and round sections with radius of thickness of section and rod of end roller section. The horizontal section of the frame is equal to dimension of section, with rotary frame inside that is connected to the upper section of web with inner row of hinges. The mechanism of section actuating consists of cylinder for cable winding and to lift rollers placed at back and front side of horizontal frame of section, respectively. Cable rollers and two cables that have such method for winding for the upper pair of section: winding cylinder – lower inner of first section – lifting – lower outer of second section – upper inner of second section, cable rollers where there is fixation, or it is taken to next pair of sections. |
