Precautions for different stages of use of pneumatic winch

Pneumatic winches are widely used in high-risk or complex environments such as mines, ships, and petrochemicals due to their explosion-proof, lightweight, and corrosion-resistant characteristics. To ensure the safe and efficient operation of the equipment, targeted measures need to be taken during installation, commissioning, daily operation, maintenance, shutdown, and storage stages. The following is a detailed explanation:

1、 Installation and debugging phase

Air source and pipeline inspection

Air source pressure: Ensure that the compressed air pressure meets the rated value of the equipment (such as 0.6-0.8MPa). Insufficient pressure can lead to insufficient power or startup failure.

Pipeline sealing: Check whether there are leaks in the trachea, joints, valves, etc., and use soap water or professional testing equipment to test the sealing.

Filter installation: Install an oil-water separator and filter at the inlet of the air source to prevent impurities from entering the pneumatic components.

Brake system debugging

Brake clearance: Adjust the clearance between the brake pads and brake discs to ensure sensitive braking and no jamming.

Spring pressure test: Use a pressure gauge to test the brake spring pressure to ensure compliance with design requirements.

No load braking test: Test the braking response time under no-load conditions, usually requiring ≤ 0.5 seconds.

Load Testing

Rated load test: gradually load to the rated load (such as 1 ton), check whether the winch runs smoothly and without abnormal noise.

Overload test: Conduct a short-term overload test within a safe range (such as 1.1 times the rated load) to verify the equipment protection function.

2、 Daily operation stage

Pre operation inspection

Gas source stability: Confirm that the pressure fluctuation of the gas source is ≤± 0.05MPa to avoid equipment loss of control due to unstable pressure.

Brake status: Manually test the brake to ensure reliable and delay free braking.

Safety device: Check if the limit switch and overload protection device are sensitive.

Standardize operational procedures

Overloading is prohibited: strictly use the equipment according to its rated load. Overloading may cause brake failure or motor damage.

Smooth start stop: Avoid frequent emergency stops and starts to reduce mechanical impact.

Load fixation: Ensure that the lifted object is securely tied to prevent slipping or shaking.

Environmental adaptability

Dust and moisture prevention: In dusty or humid environments, it is necessary to add protective covers and regularly clean the equipment.

Temperature control: Avoid prolonged use in environments below -10 ℃ or above 50 ℃, as it may affect the lifespan of pneumatic components.

3、 Maintenance phase

Regular maintenance plan

Daily inspection: Clean the surface of the equipment and check whether the trachea and joints are loose or leaking.

Weekly maintenance: lubricate moving parts such as gears and bearings, and replace worn brake pads.

Monthly maintenance: Disassemble the pneumatic motor and check the wear of the blades and sealing rings.

Key component maintenance

Pneumatic motor: Regularly replace lubricating oil (such as ISO VG32) and clean the intake filter screen.

Brake: Test the elasticity of the brake spring every quarter and adjust the brake clearance to 0.1-0.3mm.

Control valve: Disassemble and clean the reversing valve and starting valve every year, and replace the aging sealing ring.

Fault prevention

Establish archives: record equipment operation time, maintenance records, fault history, and analyze fault patterns.

Spare parts reserve: Reserve commonly used vulnerable parts (such as brake pads, sealing rings, air pipes) to shorten maintenance time.

4、 Deactivation and Storage Phase

Pre processing before discontinuation

Drain the gas source: Close the gas source valve and release the residual pressure in the pipeline.

Cleaning equipment: Remove surface oil stains and dust to prevent corrosion.

Brake locking: Manually lock the brake to prevent accidental drop of the load.

Long term storage requirements

Environmental conditions: Store indoors in a dry and ventilated area, with a temperature of 5-30 ℃ and a humidity of ≤ 60%.

Rust prevention treatment: Apply rust proof oil to metal parts and cover them with dust covers.

Regular start-up: Run for 5 minutes without load every month to maintain the flexibility of pneumatic components.

5、 Safety and emergency measures

Safety operation standards

Prohibition of modification: Do not change the air circuit or increase the load without authorization to avoid disrupting the balance of the equipment.

Personnel training: Operators need to undergo professional training to become familiar with equipment performance and emergency procedures.

Emergency Management

Air source interruption: Immediately stop operation, lock the brake, and prevent the load from falling.

Brake failure: Press the emergency stop button, cut off the air source, and manually release the load.

Fire handling: If a fire is caused by a gas leak, immediately close the gas source main valve and use a dry powder fire extinguisher to extinguish the fire.

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