Pedestal davit crane (manual)
Small slewing pipe davit for maintenance and stores lifts. A gusseted base plate with anchor bolts carries a socket with a slew-lock pin. The mast is pipe sized by SWL, turning through a 2.5D gooseneck bend into the jib, with a knee brace. A hand winch on the mast has a ratchet, pawl and crank, and the wire runs over a guide sheave at the gooseneck, along rope guides on the jib, over the tip sheave and down to a swivel hook. slew and hook move it. SWL and tag plates sit on the socket.
Installation
Copies lifting/davit-crane.tsx and the shared lib/ into src/components/deck-twin/. Needs three, @react-three/fiber and @react-three/drei. See installation for the manual route.
Usage
import { Canvas } from '@react-three/fiber'
import { OrbitControls } from '@react-three/drei'
import { Stage } from './components/deck-twin/lib/stage'
import { DavitCrane } from './components/deck-twin/lifting/davit-crane'
export default function Scene() {
return (
<Canvas shadows camera={{ position: [8, 5, 9], fov: 35 }}>
<Stage>
<DavitCrane />
</Stage>
<OrbitControls makeDefault />
</Canvas>
)
}
Props
| Prop | Type | Default | Range |
|---|---|---|---|
reach | number (m) | null | 0.9 – 5 |
height | number (m) | null | 1.8 – 6 |
slew | number (deg) | null | -180 – 180 |
hook | number (m) | null | 0.3 – 10 |
swl | number (t) | null | 0.25 – 5 |
tag | string | null | |
...group | position, rotation, scale… |
P&ID
Elevation: a post curving into a short jib with a hook; in plan, a small circle with a short reach radius (dashed) over the item it serves, labelled with SWL.
Small reach circle (a few metres) versus the large reach of a pedestal crane. Not on P&IDs.
reachheightswltagTypical suppliers
OZ Lifting Products. The geometry is generic and sized from public standards. It is not vendor CAD.
For agents
Machine-readable entry with props, ranges, defaults and ports:
Or fetch /r/davit-crane.json, or copy a ready-made instruction:
Add the Deck Twin "Pedestal davit crane (manual)" component to this project. Run `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add davit-crane` (it copies the file and the shared lib into src/components/deck-twin/), then `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz info davit-crane` for its props, ranges and ports. Render <DavitCrane /> inside a React Three Fiber <Canvas shadows>, wrapped in <Stage> from src/components/deck-twin/lib/stage. Set props from my data (metres, NPS in inches, ASME class) and leave the rest at defaults. Install three, @react-three/fiber, @react-three/drei and @types/three if they're missing. Full guide: https://decktwin.com/skill/SKILL.md