pulley
轤 centers on a mechanical wheel used to lift or pull: a pulley. The meaning is narrow and technical, tied to the device itself.
轤 combines 車 (vehicle, wheel) with 盧, which likely contributes the sound ロ. The character is a phono-semantic compound for a wheeled pulley device.
The left side 車 is a vehicle or wheel, and the right side 盧 looks like a complex mechanism. Picture a wheel with a rope running through it, lifting a heavy load: a pulley.
For ロ, imagine a low, rumbling sound as the pulley wheel turns: low -> ロ, and the wheel keeps lifting.
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