showstack / glossary / bridle
Bridle 分力吊索
Two or more legs of steel taken from separate structural points down to a single hanging position, used when the load needs to hang somewhere the structure has no point. The geometry decides everything: as the angle between the legs opens up, the tension in each leg climbs above the weight being carried, and at wide angles it climbs fast.
中文
由兩個以上的結構吊點分別拉鋼索，匯集到同一個懸掛位置，用於負載必須落在結構沒有吊點的地方。幾何決定一切：兩腿之間的夾角越大，每一腿的張力越高於實際負載，角度很大時上升極快。
Regional usage
| Where | Term | Note |
|---|---|---|
| UK / US | Bridle | |
| HK / TW | 分力吊索 / 分力鋼索 |
Easy to get wrong
A bridle is not extra capacity. It moves a load sideways between existing points and puts MORE tension in each leg than a dead hang. Two 500 kg points are not a 1000 kg bridle.
Next to this
Point / rigging point吊點A single place in the roof structure from which a load is hung, and the whole assembly that gets it there: th…Safe working load (SWL) / working load limit (WLL)安全操作負荷The maximum load a piece of rigging hardware is rated to carry in normal service — not its breaking strength,…
Sources
- Theatrecrafts glossary of technical theatre terms — Theatrecrafts / ABTT heritage primary
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