Design and installation of rail system for roof rail type window cleaning machine
When designing and installing the rail system of the roof rail type window cleaning machine, first consider the weight of each part of the window cleaning machine, the rail's own weight, the counterweight, the lateral force caused by the operation and the force caused by the wind load; the track base The design should conform to the building modulus and facilitate the civil construction, leaving enough concrete pouring and vibrating space. When the parapet wall is high, the height of the track base should be properly raised according to the size and performance of the window cleaning machine.
The supporting point of the track of the roof rail type window cleaner should not be too dense, and the spacing should be no less than 1.5m. The support point should be simplified to the simple supported beam at the maximum action load, and the deflection of the track should not exceed 1 of its span. /500; The design strength of anchors and connecting accessories should be able to withstand more than 2 times the rated load. The anchoring of embedded parts should meet the requirements of architectural design. Tracks, connecting accessories and anchors should be treated with anti-rust and anti-corrosion treatment.
Considering the influence of temperature change on the thermal expansion and contraction of the track on the track connection point and the roofing device, the length of each track segment is not more than 9m, the expansion joint gap is not more than 3mm, and the arc-turning section track should not be provided with expansion joints, and Ensure that the position of the two rail expansion joints is staggered by more than 2000mm. In areas with large temperature differences, small sections of profiles should be used as rails to reduce the influence of temperature stress on the track connection points and roofing devices.
The rail end of the roof rail type window cleaning machine shall be welded with a limit baffle. The thickness of the baffle shall not be less than 8mm, the width shall not be less than the width of the track, and the height shall meet the requirements of the limit device, generally not less than 100mm; when the track is outside the base The joint shall be welded with groove. At the bottom of the track, a galvanized steel sheet with a length of not less than 200 mm, a width not less than 20 mm, and a thickness of not less than 12 mm shall be lap welded.www.chinagondola.com