What the complete assembly must support
A hoist provides lifting force through wire rope or chain and may be manual or powered. Safe capacity also depends on its support, anchorage and accessories. A hoist with sufficient capacity does not establish the suitability of an improvised beam or suspension point. Planning must follow the complete load path.
Related concept: Cranes and lifting equipment.
Alignment and stability
The hook is positioned in the intended direction of force to prevent swinging and improper side loading. The load sits in the correct part of the hook and is secured with compatible accessories. A twisted chain is not forced, and its end is not used as a sling unless the design authorises it. Lever-operated devices have their own instructions, which must not be extrapolated to other hoists.
Checks before lifting
Identification, capacity, hook, latch, chain or rope, brake and controls are checked. Wear, corrosion, deformation or irregular operation require assessment and withdrawal where appropriate. Repairs use suitable parts and criteria. Painting a damaged chain or adding an improvised link may hide the defect without restoring strength.
Keeping people clear of the load
Passage beneath suspended loads is prevented, and loads are not left unattended. Movement is progressive, without jerking, with the route and destination prepared. A material hoist is not used to lift people on the user’s own initiative. The operation must also prevent trapping while landing the load and removing accessories.
Example of a stuck motor
In a hypothetical workshop, an attempt is made to extract a motor still attached by an overlooked fixing. Increasing force may overload the assembly or cause sudden release. The operation is stopped, the cause checked and the lift prepared again. Marked capacity does not authorise using the equipment to tear out blocked components.
Inspection and limitations
Maintenance and inspection follow the manufacturer, use and applicable regulations. Operator checks do not replace a technical inspection where one is required. Support and accessories must be reviewed together with the hoist, especially after changes, impacts or a known overload.
