To extend the service life of manual hoists during operation, comprehensive measures need to be taken from four dimensions: daily maintenance, regular inspection, operation standards, and storage management. The specific methods are as follows:

1、 Daily cleaning and rust prevention treatment

surface cleaning

After each use, wipe the surface of the gourd with a soft cloth to remove dust, oil stains, and debris. If internal components (such as chains and gears) are contaminated with dirt, they can be cleaned with a small brush to prevent impurities from entering the transmission system.

Key point: When cleaning, it is necessary to disconnect the power supply (electric hoist) or ensure that the zipper tape is in a relaxed state to prevent accidents caused by misoperation.

rust prevention treatment

After cleaning, apply anti rust grease on the surface of metal parts (such as chains, hooks, and frames) to form a protective film to prevent rusting in humid environments.

Data support: Rust prevention treatment can extend the lifespan of metal components by more than 30% (based on industry experience).

2、 Regular lubrication and component inspection

Lubrication cycle and location

Monthly lubrication: Apply engine oil or lubricating oil to moving parts such as chains, gears, and bearings to reduce wear. Before lubrication, it is necessary to clean the old oil to avoid contaminating the new oil.

Key parts:

Chain: Maintain appropriate tension, avoid being too tight or too loose, and prevent breakage.

Gears and bearings: Lubricate with butter to ensure flexible rotation.

Brake friction surface: Keep dry and clean to prevent oil stains from causing brake failure.

Component inspection and replacement

Daily check:

Brake: Pull the handle to test the braking performance and ensure that the heavy object can hover stably.

Chain: Check for corrosion, deformation, or damage, and do not twist or knot the chain links.

Hook: Confirm that there are no cracks, sharp angles, or burrs, and the opening degree does not exceed 15% of the original size.

Annual maintenance: Professional personnel disassemble and inspect the internal structure, and replace worn parts (such as brake pads and bearings).

3、 Operating standards and load management

Load limit

Overloading is strictly prohibited, and the weight of the lifted object must not exceed the rated load of the hoist. Overloading can cause chain breakage or structural deformation.

Case: A construction site used a manual hoist due to overloading, causing the chain to break and heavy objects to fall, resulting in casualties.

Operating angle and speed

Vertical lifting: Keep the chain perpendicular to the heavy object, avoid diagonal pulling (angle ≤ 5 °), and prevent the chain from getting stuck or breaking.

Uniform operation: When pulling the hand chain, apply even force to avoid pulling or suddenly releasing, and prevent the chain from jumping or getting stuck.

environmental adaptability

Temperature range: Avoid using in environments below -20 ℃ or above 50 ℃ to prevent material embrittlement or lubrication failure.

Corrosive environment: After use in chemical, coastal and other places, it is necessary to clean and apply anti rust oil immediately.

4、 Storage management and long-term protection

Short term storage

After use, store the gourd in a dry, ventilated, and non corrosive gas environment to avoid moisture and rust.

Key point: The hook should be fixed on a dedicated bracket to prevent deformation caused by chain sagging.

Long term idle disposal

When not in use for a long time, disassemble and clean each component, apply anti rust oil, and package for storage.

Pre reuse inspection: After reassembly, no-load and heavy-duty tests are required to confirm reliable braking and normal operation.

5、 Professional maintenance and record management

Professional maintenance

Maintenance and overhaul should be carried out by personnel familiar with the gourd structure to avoid secondary damage caused by improper operation.

Tool requirements: Use specialized tools (such as torque wrenches) to tighten bolts, ensuring that the torque meets the standard.

Maintenance Record

Establish maintenance records, recording the time, content, and replacement parts of each maintenance to facilitate tracking of equipment status.

Data support: Standardized recording can reduce equipment failure rates by 40% (according to industry statistics).

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment