The precautions for the explosion protection manual hoist trolley at different stages of use are as follows:

1、 Installation and commissioning phase

Environmental assessment and isolation

Ensure that the work area is free of flammable and explosive gases, dust, or corrosive substances, and if necessary, set up isolation belts and warning signs to prohibit unrelated personnel from entering.

Evaluate the ground bearing capacity to ensure the stability of the lifting machinery foundation and avoid equipment tilting or instability caused by foundation problems.

Equipment inspection and acceptance

Check whether the equipment has qualification documents such as explosion-proof certificate and factory inspection report to ensure compliance with explosion-proof standards (such as Ex d IIB T4, etc.).

During acceptance, it is important to check the sealing of explosion-proof electrical components (such as switches and junction boxes) to ensure that there is no damage or looseness; Mechanical components such as gears and chains are well lubricated and free from wear or cracks.

Installation standard operation

Strictly follow the instructions for installation to ensure that explosion-proof enclosures, cable entry devices, and other components are installed in place, avoiding failure of explosion-proof performance due to improper installation.

After installation, conduct a no-load test run to check the sensitivity and reliability of safety devices such as brakes and limiters.

2、 Daily use stage

Pre-operation check

Explosion proof electrical system: Check if the cable sheath is intact and if the junction box seal is tight to prevent electrical sparks caused by cable damage.

Mechanical components: Check whether the chains, hooks, axles, etc. are worn or deformed, whether the brakes are reliable, and avoid heavy objects falling due to mechanical failures.

Safety device: Confirm that the limiter, anti decoupling device, emergency stop button, and other functions are normal. It is strictly prohibited to dismantle or short-circuit them without authorization.

Operating Specifications

Overloading is strictly prohibited: Use according to the rated load indicated on the equipment nameplate. Overloading operations are prohibited to prevent structural damage or explosion risks caused by overloading.

Avoid lateral loading and diagonal pulling: Ensure that the load is lifted vertically to prevent lateral pulling from causing equipment overturning or damage to the explosion-proof structure.

Anti static measures: In flammable and explosive environments, operators should wear anti-static work clothes, and the equipment should be well grounded to prevent static sparks from causing explosions.

Environmental monitoring: Use a combustible gas detector to monitor the gas concentration in the work area in real time. If it exceeds the safety threshold, immediately stop the work and evacuate.

maintenance

Regular lubrication: Lubricate components such as chains and gears according to the instructions to reduce the heat generated by friction and the risk of sparks.

Cleaning explosion-proof surface: Regularly clean the dust and oil stains on the surface of the explosion-proof shell, keep the explosion-proof surface smooth, and ensure sealing performance.

Replace vulnerable parts: Replace worn chains, hooks, brake pads, and other components in a timely manner to avoid accidents caused by component failure.

3、 Discontinuation and Storage Stage

Check before discontinuation

After lifting the heavy object to a safe position, cut off the power and lock the brake to prevent accidental movement of the equipment.

Clean the oil and dust on the surface of the equipment, check whether the explosion-proof components are intact, and keep records.

Storage environment requirements

Store in a dry and well ventilated warehouse, away from direct sunlight and rain, to prevent explosion-proof components from getting damp or corroded.

Keep away from flammable and explosive materials, set up "No Smoking" signs in the warehouse, and equip with fire-fighting equipment.

When stored for a long time, regularly start the equipment and check its function to prevent parts from rusting or failing due to long-term idle.

4、 Emergency Management

Emergency plan formulation

Develop detailed emergency plans for possible accidents such as fires, explosions, and equipment overturning, clarifying emergency organization, response procedures, and rescue measures.

Regularly organize emergency drills to improve the ability of operators to respond to unexpected events.

accident handling

In the event of a fire or explosion, immediately cut off the power supply, use explosion-proof fire extinguishing equipment to extinguish the fire, and evacuate personnel to a safe area.

When equipment overturns or heavy objects fall, set up a warning area, prohibit unrelated personnel from entering, and contact professional rescue teams for handling.

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