Precautions for starting manual hoist

1、 Comprehensive inspection before operation

Component integrity check

Confirm that the hook has no cracks, deformations, or wear, especially paying attention to dangerous sections such as the hook mouth and neck. If the marking is blurry or missing, the rated lifting capacity needs to be recalculated, and overloading is strictly prohibited.

Check whether the chain is twisted or knotted, and whether the chain links are arranged neatly. When the wear of the chain diameter reaches 15%, it needs to be replaced immediately.

Confirm that the shaft and pin are securely fixed without deformation or looseness; The friction surface of the brake is clean and free of oil stains, ensuring sensitive and reliable braking.

Check if the sprocket guard, bracelet, and other accessories are complete and undamaged.

Transmission and lubrication inspection

Slowly pull the chain to test the flexibility of the transmission parts (such as gears and shafts), ensuring no jamming or abnormal noise.

Check the meshing of the chain and sprocket to prevent slipping or falling of the chain.

Add lubricating oil to transmission components such as gears and bearings to reduce wear and prevent rust.

No-load test

Perform up and down no-load operation to confirm that the brake can self brake under load, and the engagement between the pawl and ratchet is reliable.

Check whether the tension of the bracelet is uniform, without any jumping or jamming phenomenon.

2、 Key specifications in operation

Lifting point and load management

Selection of lifting points: Reasonably select lifting points based on the weight of the heavy object, and reinforce them if necessary (such as using two anchor rods to fix when the top plate is broken, with the bolts fully capped, the anchor rods exposed for no less than two pitches, and setting up secondary protection).

Load limit: Overloading is strictly prohibited, and the number of zippers must match the lifting capacity of the hoist. If one person cannot pull it, the hoist should be checked for damage, and it is strictly prohibited to increase the number of zippers or forcefully operate.

Double hoist coordination: When lifting the same object with two hoists at the same time, the weight of the heavy object shall not exceed the allowable lifting capacity of each hoist, and a dedicated person shall be responsible for directing and evenly sharing the load.

Smooth operation and directional control

Slow lifting: First, slightly tighten the chain to apply force to the lifting chain, thoroughly inspect the equipment and heavy object status, and confirm safety before continuing with the operation.

Vertical lifting: Keep the lifting chain perpendicular to the heavy object to avoid twisting or jamming the chain due to diagonal pulling or lifting. If tilting or horizontal movement is required, the zipper direction should be consistent with the chain direction.

Descent control: When pulling the bracelet counterclockwise, apply even and gentle force to prevent the chain from jumping or getting stuck.

Personnel safety and positioning

The operator should stand in the same plane as the hand chain wheel and pull the hand chain, avoiding standing within the range of force or bounce of the chain.

During the lifting or lowering process, it is strictly prohibited to stand or walk under heavy objects or near load-bearing chains to prevent heavy objects from falling or chains from breaking and injuring people.

The suspended object must not be connected to other objects to prevent sudden changes in the load caused by the connection.

3、 Special Environment and Maintenance Requirements

Environmental adaptation

When used in damp, high temperature or corrosive environments, manual hoists made of corrosion-resistant and high temperature resistant materials should be selected, and inspection frequency should be strengthened.

When approaching sediment operations, a manual hoist should be used to prevent sediment from entering the rotating bearings.

regular maintenance

Lubrication and maintenance: Regularly add lubricating oil to transmission components such as gears and bearings to reduce wear and prevent rust.

Component replacement: If the wear of components such as chains and hooks exceeds the standard (such as the wear of the chain diameter reaching 15% and the wear of the dangerous section of the hook reaching 10%), they need to be replaced immediately.

Scrap standard: When the manual hoist has cracks, deformation, or serious performance degradation, it should be immediately scrapped and strictly prohibited from continuing to be used.

Storage management

After use, the manual hoist should be cleaned, coated with rust proof grease, and stored in a dry and ventilated place to avoid moisture, rust, or corrosion.

It is strictly prohibited to throw manual hoists to prevent damage to components or injury to personnel.

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