Design scheme of track system in roof rail type window cleaning machine

- Nov 29, 2018-

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; especially the track base The design should conform to the building modulus and facilitate the civil construction, leaving enough concrete pouring 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 in the roof rail type window cleaning machine should not be too dense, and the spacing should be no less than 1.5m. Considering the maximum effective load between the supporting points, the track should be simplified to a simply supported beam, and the deflection of the track should not exceed its span. 1/500; the anchors and connecting accessories used on the equipment should be designed to withstand more than 2 times the rated load. The anchoring of the embedded parts should meet the architectural design requirements. The rails, connecting accessories and anchors should be rust-proof and anti-corrosive. deal with.


Considering the influence of temperature change, the length of each track section of the roof rail type window cleaner is not more than 9m, the gap of the expansion joint is not more than 3mm, the expansion section of the arc turning section is not suitable for setting expansion joints, and the positions of the expansion joints of the two rails are staggered. 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.


In addition, 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 externally connected to the base, it shall be welded by groove. At the bottom of the track, a galvanized steel plate with a length of not less than 200 mm, a width of not less than 20 mm, and a thickness of not less than 12 mm shall be lap welded.