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Mobile arched roof — frame simulation

Mobile arched roof simulation: 4 rail and retraction layouts

This simulation illustrates a retractable whole-frame arched roof, its X-braces and accessory positions. Select the retraction direction and rail position to explore how the frame moves.

Explore one-end and two-end roof movement with either raised rails or ground-level rails, plus the accessory positions. The actual installation configuration is determined by the project drawings.

Retractable arched roof — working principle

PA 1: raised rails on I-section columns, retracting to one end. 20% is packed; 100% covers the full length.

Retractable arched frame with X-braces, sliding steel rings, rail-mounted wheels and motor drive beams at the leading postsThe reference arrangement has two rails raised on six fixed I-section columns, with people walking and working below. Nine roof trusses have curved top chords, straight bottom ties and triangular webs. The moving roof posts are relatively low. Two motor drive beams sit on opposite sides of the frame; each connects the leading two posts on one rail and keeps their spacing constant during movement. The last truss stays fixed with holding stays. In this model, the retracted frame occupies 20 percent of its fully extended length. X-braces between the posts and on the roof fold as the frame retracts. Label 1 identifies steel rings, label 2 wheels and label 3 motor drive beams. Select a label, then follow the product links below.
Compare the 4 layouts
1. Steel rings with threaded rods and nuts: slide on the roof posts at the X-brace connections.
View steel rings:65×60 80×60 94×60
  • PA 1: one-end retraction, raised rails on I-section columns.
  • PA 2: two-end retraction, raised rails on I-section columns.
  • PA 1.1: one-end retraction, ground-level rails.
  • PA 2.1: two-end retraction, ground-level rails.

20% is compact retraction; 50% is the intermediate position; 100% is full extension to cover the roof length in this model. In PA 2 and PA 2.1, the two halves retract to opposite ends and meet at the centre at 100%.

Three accessory positions on the roof frame

  1. Steel rings with threaded rods and nuts: mounted on the moving posts, allowing the X-brace connections between posts to slide as the frame retracts or extends.
    Steel ring 65×60Steel ring 80×60Steel ring 94×60
  2. Anti-wind wheels: at the feet of the moving posts, travelling along raised or ground-level rails according to the installation layout.
    Anti-wind wheel 140×5.5Anti-wind wheel 110×4.5
  3. Motor drive beams: on both sides of the frame; each beam connects the feet of the leading two posts on one rail. The two-end layout illustrates mirrored drive groups at opposite ends.
    1.5 m beam · 2 motors, 0.8 kW2 m beam · 4 motors, 0.8 kW2.4 m beam · 4 motors, 0.8 kW

Confirm the actual installation and accessory specifications against the project drawings. The illustrated drive groups explain the principle; they do not determine the required motor count for every project.