The rail type window cleaning machine is connected to the structural panel of the building through a rail system, and the gauge distance is generally 0.8 to 4.0 m, and the two rails can be arranged in one plane or not in one plane. The track system consists of a base, a connector and a track. Before the structure is capped, the height of the base should be more than 80mm above the roof surface layer, the base should be 1500~2500mm, and the base embedded part should be a piece of 10~16mm thick embedded steel plate and 4 The root φ16 or φ20 anchor bolt is composed. After the foundation is completed, all the embedded steel plates are adjusted to the same plane by adjusting the nuts on the embedded bolts. After the secondary grout fills the gap, the embedded steel plate is fixed, and finally the rail connecting piece is used. The pressure plate) fixes the rail to the embedded steel plate. The window of the window cleaner is made of I-shaped steel or H-shaped steel. Generally, the track is directly welded to the embedded steel plate. After the track is installed, the base and the roof are uniformly waterproofed.
The standard rail type window cleaning machine should pay attention to the following points when designing and installing its rail system:
1 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;
2 The design of the track base should conform to the building modulus and facilitate the civil construction, leaving enough concrete pouring and vibrating space (such as pouring holes). When the parapet is high, the track base should be properly raised according to the size and performance of the window cleaning machine. Height of the seat;
3 The support points of the track should not be too dense, and the spacing should be no less than 1.5m. Considering the maximum effective load between the support points, the track should be simplified to a simply supported beam, and the deflection of the track should not exceed 1/500 of its span;
4 The design strength of the track anchors and connecting accessories should be able to withstand more than 2 times the rated load. The anchoring of the embedded parts should meet the requirements of the architectural design. The track, connecting accessories and anchors should be rust-proof and anti-corrosive;
5 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 section is not more than 9m, the gap of the expansion joint is not more than 3mm, and the expansion and contraction section of the arc turning section is not suitable for setting expansion joints. And ensure that the position of the two rail expansion joints is staggered more than 2000mm. In the area with large temperature difference, the small section of the profile should be used as the track to reduce the influence of temperature stress on the track connection point and the roofing device;
6 track end should be welded limit baffle, the thickness of the baffle is not less than 8mm, the width is not less than the track width, the height should meet the requirements of the limit device, generally not less than 100mm;
7 When the track is outside the joint of the base, it should be welded by groove. At the bottom of the track, a galvanized steel plate with a length of not less than 200mm, a width of not less than 20mm, and a thickness of not less than 12mm should be lap welded.