The reasons and solutions for the noise generated during the lifting process of stainless steel lever cranes are as follows:

1、 The main causes of noise generation

Friction and wear of components

Chain and gear: Long term use can cause wear and tear on components such as chains and gears, resulting in frictional noise during operation.

Bearing issue: Insufficient or damaged lubrication of the bearing can cause abnormal noise during rotation.

Lubrication system failure

Insufficient lubricating oil: Key parts such as reducers and bearings lack oil, resulting in direct metal contact, exacerbating friction and noise.

Lubricating oil deterioration: Old or contaminated oil cannot effectively reduce friction, forming a source of noise.

Loose or damaged components

Structural looseness: Loose bolts, pins, and other connecting components can cause vibration and collision sounds during operation.

Component damage: such as gear breakage, chain disconnection, etc., causing abnormal noise.

Abnormal braking system

Brake malfunction: Uneven wear or improper adjustment of brake pads, resulting in sharp noise during braking.

Braking torque deviation: The braking force of the two brakes is not consistent, resulting in lateral torsional vibration.

Improper operation

Sudden start/brake: Emergency stop or rapid reverse operation causes impact torque and produces instantaneous noise.

Overloading operation: Overloading causes structural deformation, increasing friction and vibration.

environmental factor

Workplace noise: The surrounding environment noise is superimposed, amplifying the perception of equipment noise.

Unstable foundation: Uneven ground or loose foundation can cause increased vibration of the entire machine.

2、 Solution

Regular maintenance and inspection

Lubrication management: Regularly add or replace lubricating oil according to the instructions, with a focus on inspecting parts such as reducers and bearings.

Component maintenance: Regularly inspect the wear of chains, gears, and bearings, and replace damaged components in a timely manner.

Tighten connectors: Check if bolts, pins, and other connectors are loose, and if necessary, re tighten or replace them.

Optimize equipment design

Noise reduction renovation: Install soundproof covers or shock absorbers at noise sources such as reducers and motors.

Upgraded components: Select low-noise gears, bearings, and other components to reduce operational friction.

Standardize operational procedures

Train operators to avoid improper operations such as emergency stop and overload, and reduce impact torque and vibration.

Smooth operation: Slowly start and brake to reduce the instantaneous load of the equipment.

Improving the working environment

Foundation reinforcement: Ensure that the equipment is installed on a flat and sturdy foundation to reduce vibration transmission.

Sound insulation measures: Install sound barriers or sound-absorbing materials in noise sensitive areas.

technology upgrade

Hydraulic system optimization: Using low-noise hydraulic pumps and motors, optimizing pipeline design to reduce fluid noise.

Intelligent monitoring: Install vibration and noise sensors to monitor equipment status in real-time and provide early warning of faults.

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